diff --git a/caca/caca_types.h.in b/caca/caca_types.h.in
index be0379a..11d34ab 100644
--- a/caca/caca_types.h.in
+++ b/caca/caca_types.h.in
@@ -38,12 +38,12 @@
 
 typedef signed char int8_t;
 typedef signed short int16_t;
-typedef signed long int int32_t;
+typedef signed int int32_t;
 typedef signed long long int int64_t;
 
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
-typedef unsigned long int uint32_t;
+typedef unsigned int uint32_t;
 typedef unsigned long long int uint64_t;
 
 typedef int ssize_t;
@@ -55,12 +55,12 @@ typedef unsigned int size_t;
 
 typedef signed char int8_t;
 typedef signed short int16_t;
-typedef signed long int int32_t;
+typedef signed int int32_t;
 typedef signed long long int int64_t;
 
 typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
-typedef unsigned long int uint32_t;
+typedef unsigned int uint32_t;
 typedef unsigned long long int uint64_t;
 
 typedef int ssize_t;