diff --git a/src/template.c b/src/template.c
index 2a0fc9a..10a6aa5 100644
--- a/src/template.c
+++ b/src/template.c
@@ -173,7 +173,7 @@ main(void)
 	if (output_file == NULL) {
 		fflush(stdout);
 		perror("fopen");
-		return 1;
+		return EXIT_FAILURE;
 	}
 
 	// 2. prepare variables