diff --git a/commit.h b/commit.h
index e57ae4b583..fd1cbe7263 100644
--- a/commit.h
+++ b/commit.h
@@ -19,11 +19,11 @@ struct commit_list {
 struct commit {
 	struct object object;
 	void *util;
-	unsigned int index;
 	timestamp_t date;
 	struct commit_list *parents;
 	struct tree *tree;
 	uint32_t graph_pos;
+	unsigned int index;
 };
 
 extern int save_commit_buffer;