diff --git a/parse.c b/parse.c
index 8aaf799..6ea7c10 100644
--- a/parse.c
+++ b/parse.c
@@ -180,6 +180,7 @@
 		pow = 1;
 	else if (!strcmp("%", c)) {
 		*percent = 1;
+		free(c);
 		return ret;
 	}