1 files changed, 1 insertions, 1 deletions
diff --git a/builtin/diff.c b/builtin/diff.c
index 1118689fb2..0fe638fc45 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -182,7 +182,7 @@ static int builtin_diff_combined(struct rev_info *revs,
 		hashcpy((unsigned char *)(parent + i), ent[i].item->sha1);
 	diff_tree_combined(parent[0], parent + 1, ents - 1,
 			   revs->dense_combined_merges, revs);
-	free(parent);
+	free((void *)parent);
 	return 0;
 }