diff --git a/src/rc/checkpath.c b/src/rc/checkpath.c
index bab22692..c4dd7d9d 100644
--- a/src/rc/checkpath.c
+++ b/src/rc/checkpath.c
@@ -151,7 +151,7 @@ static char *clean_path(char *path)
 	char *ch;
 	char *ch2;
 	char *str;
-	str = xmalloc(strlen(path));
+	str = xmalloc(strlen(path) + 1);
 	ch = path;
 	ch2 = str;
 	while (true) {