diff --git a/builtin/log.c b/builtin/log.c
index 8c0939dd42..baf98b75e1 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1884,6 +1884,7 @@ static void prepare_bases(struct base_tree_info *bases,
 		bases->nr_patch_id++;
 	}
 	clear_commit_base(&commit_base);
+	release_revisions(&revs);
 }
 
 static void print_bases(struct base_tree_info *bases, FILE *file)