diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/EquivalenceClass.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/EquivalenceClass.java
index 2d9880c23bcaa4..9e5c746de872a3 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/EquivalenceClass.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/EquivalenceClass.java
@@ -56,11 +56,11 @@ public void addEquivalenceClass(SlotReference slot0, SlotReference slot1) {
                 equivalenceSlotMap.put(newRef, slot0Sets);
             }
         } else if (slot0Sets != null) {
-            // p1 present, we need to merge into it
+            // slot0Sets present, we need to merge into it
             slot0Sets.add(slot1);
             equivalenceSlotMap.put(slot1, slot0Sets);
         } else if (slot1Sets != null) {
-            // p2 present, we need to merge into it
+            // slot1Sets present, we need to merge into it
             slot1Sets.add(slot0);
             equivalenceSlotMap.put(slot0, slot1Sets);
         } else {