diff --git a/Utilities/cmlibrhash/librhash/md5.c b/Utilities/cmlibrhash/librhash/md5.c
index 0feb0903079f10215bf9879fbb36b57b12bd27cd..b20de45e9d81616631830c65f131b5316f4b9dea 100644
--- a/Utilities/cmlibrhash/librhash/md5.c
+++ b/Utilities/cmlibrhash/librhash/md5.c
@@ -213,8 +213,8 @@ void rhash_md5_final(md5_ctx *ctx, unsigned char* result)
 	/* pad message and run for last block */
 
 	/* append the byte 0x80 to the message */
-	ctx->message[index]   &= ~(0xFFFFFFFF << shift);
-	ctx->message[index++] ^= 0x80 << shift;
+	ctx->message[index]   &= ~(0xFFFFFFFFu << shift);
+	ctx->message[index++] ^= 0x80u << shift;
 
 	/* if no room left in the message to store 64-bit message length */
 	if (index > 14) {