diff --git a/src/imageutils/transupp.c b/src/imageutils/transupp.c
index 8003c48..3805646 100644
--- a/src/imageutils/transupp.c
+++ b/src/imageutils/transupp.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <jpeglib.h>
 #include <jpegint.h>