diff --git a/test/tmpf.h b/test/tmpf.h
index 61db73d..ce47191 100644
--- a/test/tmpf.h
+++ b/test/tmpf.h
@@ -27,7 +27,7 @@
 	char path[PATH_MAX];
 };
 
-int tmpf_init(struct tmpf *tmpf, const char *template);
+int tmpf_init(struct tmpf *tmpf, const char *template_str);
 
 void tmpf_destroy(struct tmpf *tmpf);