diff --git a/pipi/pixels.c b/pipi/pixels.c
index 9f0b253..fd10ff4 100644
--- a/pipi/pixels.c
+++ b/pipi/pixels.c
@@ -97,7 +97,11 @@ pipi_pixels_t *pipi_getpixels(pipi_image_t *img, pipi_format_t type)
                     uint8_t d;
 
                     p = src[4 * (y * img->w + x) + i];
-                    d = (int)(255.999 * pow(p, 1. / GAMMA));
+
+                    if(p < 0.) d = 0.;
+                    else if(p > 1.) d = 255;
+                    else d = (int)(255.999 * pow(p, 1. / GAMMA));
+
                     dest[4 * (y * img->w + x) + i] = d;
 
                     e = p - u8tof32(d);