diff --git a/keygen.c b/keygen.c
index 6d1fd84..e80fcef 100644
--- a/keygen.c
+++ b/keygen.c
@@ -16,4 +16,5 @@ int main(int argc, char **argv)
 	}
 	puts(key);
 	fclose(f);
+	return(0);
 }