diff --git a/builtin/log.c b/builtin/log.c
index f75d87e8d7..a7bca8353b 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -2241,6 +2241,7 @@ done:
 	strbuf_release(&rdiff1);
 	strbuf_release(&rdiff2);
 	strbuf_release(&rdiff_title);
+	UNLEAK(rev);
 	return 0;
 }