1 files changed, 1 insertions, 1 deletions
diff --git a/TOOLS/dump_mp4.c b/TOOLS/dump_mp4.c
index f0fc2dc631..7c67189c53 100644
--- a/TOOLS/dump_mp4.c
+++ b/TOOLS/dump_mp4.c
@@ -1,6 +1,6 @@
 #include <stdio.h>
 
-int main(){
+int main(void){
 int c;
 unsigned int head=-1;
 int pos=-3;