diff --git a/caca/caca.h b/caca/caca.h
index b5920b9..d3a4b31 100644
--- a/caca/caca.h
+++ b/caca/caca.h
@@ -83,7 +83,7 @@ struct caca_event
         struct { unsigned int w, h; } resize;
         struct { unsigned int ch; unsigned long int utf32; char utf8[8]; } key;
     } data;
-    unsigned char padding[16];
+    uint8_t padding[16];
 };
 
 /** \brief Special key values.
diff --git a/caca/driver_conio.c b/caca/driver_conio.c
index c98fe69..4462e2b 100644
--- a/caca/driver_conio.c
+++ b/caca/driver_conio.c
@@ -135,7 +135,7 @@ static void conio_handle_resize(caca_display_t *dp)
 
 static int conio_get_event(caca_display_t *dp, caca_privevent_t *ev)
 {
-    unsigned char ch;
+    uint8_t ch;
     caca_privevent_t release;
 
     if(!_conio_kbhit())
@@ -148,7 +148,7 @@ static int conio_get_event(caca_display_t *dp, caca_privevent_t *ev)
 
     ev->type = CACA_EVENT_KEY_PRESS;
     ev->data.key.ch = ch;
-    ev->data.key.utf32 = (uint32_t)ch;
+    ev->data.key.utf32 = ch;
     ev->data.key.utf8[0] = ch;
     ev->data.key.utf8[1] = '\0';
 
diff --git a/caca/driver_gl.c b/caca/driver_gl.c
index 55d995d..5063226 100644
--- a/caca/driver_gl.c
+++ b/caca/driver_gl.c
@@ -70,13 +70,13 @@ struct driver_private
     float incx, incy;
     unsigned long int const *blocks;
     int *txid;
-    unsigned char close;
-    unsigned char bit;
-    unsigned char mouse_changed, mouse_clicked;
+    uint8_t close;
+    uint8_t bit;
+    uint8_t mouse_changed, mouse_clicked;
     unsigned int mouse_x, mouse_y;
     unsigned int mouse_button, mouse_state;
 
-    unsigned char key;
+    uint8_t key;
     int special_key;
 
     float sw, sh;
diff --git a/cucul/attr.c b/cucul/attr.c
index 1ff8b6b..fd40f0c 100644
--- a/cucul/attr.c
+++ b/cucul/attr.c
@@ -181,7 +181,7 @@ int cucul_put_attr(cucul_canvas_t *cv, int x, int y, unsigned long int attr)
  *  \param bg The requested ANSI background colour.
  *  \return 0 in case of success, -1 if an error occurred.
  */
-int cucul_set_color_ansi(cucul_canvas_t *cv, unsigned char fg, unsigned char bg)
+int cucul_set_color_ansi(cucul_canvas_t *cv, uint8_t fg, uint8_t bg)
 {
     uint32_t attr;
 
@@ -257,7 +257,7 @@ int cucul_set_color_argb(cucul_canvas_t *cv, unsigned int fg, unsigned int bg)
  *  \param attr The requested attribute value.
  *  \return The corresponding DOS ANSI value.
  */
-unsigned char cucul_attr_to_ansi(unsigned long int attr)
+uint8_t cucul_attr_to_ansi(unsigned long int attr)
 {
     uint8_t fg = nearest_ansi((attr >> 4) & 0x3fff);
     uint8_t bg = nearest_ansi(attr >> 18);
@@ -281,7 +281,7 @@ unsigned char cucul_attr_to_ansi(unsigned long int attr)
  *  \param attr The requested attribute value.
  *  \return The corresponding ANSI foreground value.
  */
-unsigned char cucul_attr_to_ansi_fg(unsigned long int attr)
+uint8_t cucul_attr_to_ansi_fg(unsigned long int attr)
 {
     return nearest_ansi(((uint16_t)attr >> 4) & 0x3fff);
 }
@@ -301,7 +301,7 @@ unsigned char cucul_attr_to_ansi_fg(unsigned long int attr)
  *  \param attr The requested attribute value.
  *  \return The corresponding ANSI background value.
  */
-unsigned char cucul_attr_to_ansi_bg(unsigned long int attr)
+uint8_t cucul_attr_to_ansi_bg(unsigned long int attr)
 {
     return nearest_ansi(attr >> 18);
 }
@@ -387,7 +387,7 @@ unsigned int cucul_attr_to_rgb12_bg(unsigned long int attr)
  *  \param attr The requested attribute value.
  *  \param argb An array of 8-bit integers.
  */
-void cucul_attr_to_argb64(unsigned long int attr, unsigned char argb[8])
+void cucul_attr_to_argb64(unsigned long int attr, uint8_t argb[8])
 {
     uint16_t fg = (attr >> 4) & 0x3fff;
     uint16_t bg = attr >> 18;
diff --git a/cucul/charset.c b/cucul/charset.c
index 65e0c5f..55a32d7 100644
--- a/cucul/charset.c
+++ b/cucul/charset.c
@@ -190,7 +190,7 @@ unsigned int cucul_utf32_to_utf8(char *buf, unsigned long int ch)
  *  \param ch The UTF-32 character.
  *  \return The corresponding CP437 character, or "?" if not representable.
  */
-unsigned char cucul_utf32_to_cp437(unsigned long int ch)
+uint8_t cucul_utf32_to_cp437(unsigned long int ch)
 {
     unsigned int i;
 
@@ -222,7 +222,7 @@ unsigned char cucul_utf32_to_cp437(unsigned long int ch)
  *  \param ch The CP437 character.
  *  \return The corresponding UTF-32 character, or zero if not representable.
  */
-unsigned long int cucul_cp437_to_utf32(unsigned char ch)
+unsigned long int cucul_cp437_to_utf32(uint8_t ch)
 {
     if(ch > 0x7f)
         return cp437_lookup2[ch - 0x7f];
diff --git a/cucul/cucul.c b/cucul/cucul.c
index 3554eef..fb2c55b 100644
--- a/cucul/cucul.c
+++ b/cucul/cucul.c
@@ -254,9 +254,9 @@ unsigned int cucul_get_canvas_height(cucul_canvas_t const *cv)
  *  \param cv A libcucul canvas.
  *  \return The canvas character array.
  */
-unsigned char const * cucul_get_canvas_chars(cucul_canvas_t const *cv)
+uint8_t const * cucul_get_canvas_chars(cucul_canvas_t const *cv)
 {
-    return (unsigned char const *)cv->chars;
+    return (uint8_t const *)cv->chars;
 }
 
 /** \brief Get the canvas attribute array.
@@ -273,9 +273,9 @@ unsigned char const * cucul_get_canvas_chars(cucul_canvas_t const *cv)
  *  \param cv A libcucul canvas.
  *  \return The canvas attribute array.
  */
-unsigned char const * cucul_get_canvas_attrs(cucul_canvas_t const *cv)
+uint8_t const * cucul_get_canvas_attrs(cucul_canvas_t const *cv)
 {
-    return (unsigned char const *)cv->attrs;
+    return (uint8_t const *)cv->attrs;
 }
 
 /** \brief Uninitialise \e libcucul.
diff --git a/cucul/cucul.h b/cucul/cucul.h
index 7f52398..d54a458 100644
--- a/cucul/cucul.h
+++ b/cucul/cucul.h
@@ -93,8 +93,8 @@ __extern int cucul_set_canvas_size(cucul_canvas_t *, unsigned int,
                                    unsigned int);
 __extern unsigned int cucul_get_canvas_width(cucul_canvas_t const *);
 __extern unsigned int cucul_get_canvas_height(cucul_canvas_t const *);
-__extern unsigned char const * cucul_get_canvas_chars(cucul_canvas_t const *);
-__extern unsigned char const * cucul_get_canvas_attrs(cucul_canvas_t const *);
+__extern uint8_t const * cucul_get_canvas_chars(cucul_canvas_t const *);
+__extern uint8_t const * cucul_get_canvas_attrs(cucul_canvas_t const *);
 __extern int cucul_free_canvas(cucul_canvas_t *);
 __extern int cucul_rand(int, int);
 __extern char const * cucul_get_version(void);
@@ -116,8 +116,7 @@ __extern int cucul_put_str(cucul_canvas_t *, int, int, char const *);
 __extern unsigned long int cucul_get_attr(cucul_canvas_t const *, int, int);
 __extern int cucul_set_attr(cucul_canvas_t *, unsigned long int);
 __extern int cucul_put_attr(cucul_canvas_t *, int, int, unsigned long int);
-__extern int cucul_set_color_ansi(cucul_canvas_t *, unsigned char,
-                                  unsigned char);
+__extern int cucul_set_color_ansi(cucul_canvas_t *, uint8_t, uint8_t);
 __extern int cucul_set_color_argb(cucul_canvas_t *, unsigned int,
                                   unsigned int);
 __extern int cucul_printf(cucul_canvas_t *, int, int, char const *, ...);
@@ -151,12 +150,12 @@ __extern int cucul_stretch_right(cucul_canvas_t *);
  *  These functions perform conversions between attribute values.
  *
  *  @{ */
-__extern unsigned char cucul_attr_to_ansi(unsigned long int);
-__extern unsigned char cucul_attr_to_ansi_fg(unsigned long int);
-__extern unsigned char cucul_attr_to_ansi_bg(unsigned long int);
+__extern uint8_t cucul_attr_to_ansi(unsigned long int);
+__extern uint8_t cucul_attr_to_ansi_fg(unsigned long int);
+__extern uint8_t cucul_attr_to_ansi_bg(unsigned long int);
 __extern unsigned int cucul_attr_to_rgb12_fg(unsigned long int);
 __extern unsigned int cucul_attr_to_rgb12_bg(unsigned long int);
-__extern void cucul_attr_to_argb64(unsigned long int, unsigned char[8]);
+__extern void cucul_attr_to_argb64(unsigned long int, uint8_t[8]);
 /*  @} */
 
 /** \defgroup cucul_charset libcucul character set conversions
@@ -166,8 +165,8 @@ __extern void cucul_attr_to_argb64(unsigned long int, unsigned char[8]);
  *  @{ */
 __extern unsigned long int cucul_utf8_to_utf32(char const *, unsigned int *);
 __extern unsigned int cucul_utf32_to_utf8(char *, unsigned long int);
-__extern unsigned char cucul_utf32_to_cp437(unsigned long int);
-__extern unsigned long int cucul_cp437_to_utf32(unsigned char);
+__extern uint8_t cucul_utf32_to_cp437(unsigned long int);
+__extern unsigned long int cucul_cp437_to_utf32(uint8_t);
 __extern char cucul_utf32_to_ascii(unsigned long int);
 __extern int cucul_utf32_is_fullwidth(unsigned long int);
 /*  @} */
diff --git a/cucul/dither.c b/cucul/dither.c
index b4d5f83..95f8491 100644
--- a/cucul/dither.c
+++ b/cucul/dither.c
@@ -41,7 +41,7 @@
 #   define LOOKUP_SAT 32
 #   define LOOKUP_HUE 16
 #endif
-static unsigned char hsv_distances[LOOKUP_VAL][LOOKUP_SAT][LOOKUP_HUE];
+static uint8_t hsv_distances[LOOKUP_VAL][LOOKUP_SAT][LOOKUP_HUE];
 static uint16_t lookup_colors[8];
 static int lookup_initialised = 0;
 
@@ -1531,7 +1531,7 @@ static int init_lookup(void)
     {
         int i, distbg, distfg, dist;
         int val, sat, hue;
-        unsigned char outbg, outfg;
+        uint8_t outbg, outfg;
 
         val = 0xfff * v / (LOOKUP_VAL - 1);
         sat = 0xfff * s / (LOOKUP_SAT - 1);
diff --git a/cucul/export.c b/cucul/export.c
index 34c5e74..bf49c62 100644
--- a/cucul/export.c
+++ b/cucul/export.c
@@ -429,8 +429,7 @@ static void *export_html(cucul_canvas_t const *cv, unsigned long int *bytes)
                 else if(linechar[x + len] <= 0x00000020)
                     cur += sprintf(cur, "&nbsp;");
                 else if(linechar[x + len] < 0x00000080)
-                    cur += sprintf(cur, "%c",
-                                   (unsigned char)linechar[x + len]);
+                    cur += sprintf(cur, "%c", (uint8_t)linechar[x + len]);
                 else
                     cur += sprintf(cur, "&#%i;",
                                    (unsigned int)linechar[x + len]);
@@ -524,7 +523,7 @@ static void *export_html3(cucul_canvas_t const *cv, unsigned long int *bytes)
                 else if(linechar[x + i] <= 0x00000020)
                     cur += sprintf(cur, "&nbsp;");
                 else if(linechar[x + i] < 0x00000080)
-                    cur += sprintf(cur, "%c", (unsigned char)linechar[x + i]);
+                    cur += sprintf(cur, "%c", (uint8_t)linechar[x + i]);
                 else
                     cur += sprintf(cur, "&#%i;", (unsigned int)linechar[x + i]);
             }
@@ -853,10 +852,10 @@ static void *export_ps(cucul_canvas_t const *cv, unsigned long int *bytes)
                 case '\\':
                 case '(':
                 case ')':
-                    cur += sprintf(cur, "(\\%c) show\n", (unsigned char)ch);
+                    cur += sprintf(cur, "(\\%c) show\n", (uint8_t)ch);
                     break;
                 default:
-                    cur += sprintf(cur, "(%c) show\n", (unsigned char)ch);
+                    cur += sprintf(cur, "(%c) show\n", (uint8_t)ch);
                     break;
             }
         }
diff --git a/cucul/file.c b/cucul/file.c
index 91601a2..8553e40 100644
--- a/cucul/file.c
+++ b/cucul/file.c
@@ -40,7 +40,7 @@ static int zipread(cucul_file_t *, void *, unsigned int);
 struct cucul_file
 {
 #   if defined HAVE_ZLIB_H
-    unsigned char read_buffer[READSIZE];
+    uint8_t read_buffer[READSIZE];
     z_stream stream;
     gzFile gz;
     int eof, zip;
diff --git a/examples/font.c b/examples/font.c
index 71184a2..57892c5 100644
--- a/examples/font.c
+++ b/examples/font.c
@@ -33,7 +33,7 @@ int main(int argc, char *argv[])
     caca_display_t *dp;
     cucul_font_t *f;
     cucul_dither_t *d;
-    unsigned char *buf;
+    uint8_t *buf;
     unsigned int w, h;
     char const * const * fonts;
 
diff --git a/examples/swallow.c b/examples/swallow.c
index be993cf..25ca9c9 100644
--- a/examples/swallow.c
+++ b/examples/swallow.c
@@ -28,7 +28,7 @@ int main(int argc, char **argv)
     char cmd[BUFSIZ];
     static cucul_canvas_t *cv, *app;
     static caca_display_t *dp;
-    unsigned char *buf[4];
+    uint8_t *buf[4];
     long int bytes[4], total[4];
     FILE *f[4];
     int w, h, i;
diff --git a/kernel/kernel.c b/kernel/kernel.c
index a737904..c18190a 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -190,7 +190,7 @@ int strcasecmp(const char *s1, const char *s2)
 
 int memcmp(const void *_s1, const void *_s2, size_t n)
 {
-    unsigned char const *s1 = _s1, *s2 = _s2;
+    uint8_t const *s1 = _s1, *s2 = _s2;
 
     while(n--)
     {
diff --git a/src/cacaplay.c b/src/cacaplay.c
index 38fea93..24a22da 100644
--- a/src/cacaplay.c
+++ b/src/cacaplay.c
@@ -31,7 +31,7 @@ int main(int argc, char **argv)
 {
     cucul_canvas_t *cv, *app;
     caca_display_t *dp;
-    unsigned char *buf = NULL;
+    uint8_t *buf = NULL;
     long int bytes = 0, total = 0;
     int fd;
 
diff --git a/src/cacaserver.c b/src/cacaserver.c
index 51100f7..ffe3de9 100644
--- a/src/cacaserver.c
+++ b/src/cacaserver.c
@@ -149,10 +149,10 @@ int main(void)
     /* FIXME, handle >255 sizes */
     memcpy(server->prefix, INIT_PREFIX, sizeof(INIT_PREFIX));
     tmp = strstr(server->prefix, "____");
-    tmp[0] = (unsigned char) (server->width & 0xff00) >> 8;
-    tmp[1] = (unsigned char) server->width & 0xff;
-    tmp[2] = (unsigned char) (server->height & 0xff00) >> 8;
-    tmp[3] = (unsigned char) server->height & 0xff;
+    tmp[0] = (uint8_t) (server->width & 0xff00) >> 8;
+    tmp[1] = (uint8_t) server->width & 0xff;
+    tmp[2] = (uint8_t) (server->height & 0xff00) >> 8;
+    tmp[3] = (uint8_t) server->height & 0xff;
 
     if((server->sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1)
     {
diff --git a/src/common-image.c b/src/common-image.c
index 53a74a1..a2d6f43 100644
--- a/src/common-image.c
+++ b/src/common-image.c
@@ -277,7 +277,7 @@ void unload_image(struct image * im)
 #if !defined(USE_IMLIB2)
 static unsigned int u32fread(FILE *fp)
 {
-    unsigned char buffer[4];
+    uint8_t buffer[4];
     fread(buffer, 4, 1, fp);
     return ((unsigned int)buffer[3] << 24) | ((unsigned int)buffer[2] << 16)
              | ((unsigned int)buffer[1] << 8) | ((unsigned int)buffer[0]);
@@ -285,14 +285,14 @@ static unsigned int u32fread(FILE *fp)
 
 static unsigned int u16fread(FILE *fp)
 {
-    unsigned char buffer[2];
+    uint8_t buffer[2];
     fread(buffer, 2, 1, fp);
     return ((unsigned int)buffer[1] << 8) | ((unsigned int)buffer[0]);
 }
 
 static unsigned int u8fread(FILE *fp)
 {
-    unsigned char buffer;
+    uint8_t buffer;
     fread(&buffer, 1, 1, fp);
     return (unsigned int)buffer;
 }