1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/md5.c b/libavutil/md5.c
index 6c23ed642f..e31b102286 100644
--- a/libavutil/md5.c
+++ b/libavutil/md5.c
@@ -164,7 +164,7 @@ void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len){
 #ifdef TEST
 #include <stdio.h>
 #undef printf
-main(){
+main(void){
     uint64_t md5val;
     int i;
     uint8_t in[1000];