diff --git a/pack-write.c b/pack-write.c
index f171405495..f27c1f7f28 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -568,6 +568,8 @@ void stage_tmp_packfiles(struct strbuf *name_buffer,
 		rename_tmp_packfile(name_buffer, rev_tmp_name, "rev");
 	if (mtimes_tmp_name)
 		rename_tmp_packfile(name_buffer, mtimes_tmp_name, "mtimes");
+
+	free((char *)rev_tmp_name);
 }
 
 void write_promisor_file(const char *promisor_name, struct ref **sought, int nr_sought)