diff --git a/tdump.c b/tdump.c
index 12dfc8a..315e30a 100644
--- a/tdump.c
+++ b/tdump.c
@@ -19,7 +19,7 @@
 static	char	lineno[]="000000";
 static 	unsigned long line=0;
 
-void main()
+int main()
 
 {