diff --git a/libswscale/rgb2rgb.h b/libswscale/rgb2rgb.h
index f7e9e5dd83..f233e2c051 100644
--- a/libswscale/rgb2rgb.h
+++ b/libswscale/rgb2rgb.h
@@ -26,6 +26,8 @@
 #ifndef RGB2RGB_INCLUDED
 #define RGB2RGB_INCLUDED
 
+#include <inttypes.h>
+
 /* A full collection of rgb to rgb(bgr) convertors */
 extern void (*rgb24to32)   (const uint8_t *src, uint8_t *dst, long src_size);
 extern void (*rgb24to16)   (const uint8_t *src, uint8_t *dst, long src_size);