diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 3f34cfb66a85f2742d368854ab5a4bf666a766f3..bdf104596d122150b3ae9d8aa849dece9fb4e519 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2526,6 +2526,8 @@ static struct hist_field *create_alias(struct hist_trigger_data *hist_data,
 		return NULL;
 	}
 
+	alias->var_ref_idx = var_ref->var_ref_idx;
+
 	return alias;
 }