diff --git a/refs/debug.c b/refs/debug.c
index 7db4abccc3..449ac3e6cc 100644
--- a/refs/debug.c
+++ b/refs/debug.c
@@ -364,8 +364,8 @@ struct debug_reflog_expiry_should_prune {
 };
 
 static void debug_reflog_expiry_prepare(const char *refname,
-				    const struct object_id *oid,
-				    void *cb_data)
+					const struct object_id *oid,
+					void *cb_data)
 {
 	struct debug_reflog_expiry_should_prune *prune = cb_data;
 	trace_printf_key(&trace_refs, "reflog_expire_prepare: %s\n", refname);