diff --git a/demo/tut3.c b/demo/tut3.c
index 1f520af..d1dab09 100644
--- a/demo/tut3.c
+++ b/demo/tut3.c
@@ -184,6 +184,7 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	return 0;
 }
 
 /*