diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index 380c758e5751c8..126ed1135e9dc0 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -2391,13 +2391,11 @@ public void initFuzzyModeVariables() {
             this.rewriteOrToInPredicateThreshold = 100000;
             this.enableFunctionPushdown = false;
             this.enableDeleteSubPredicateV2 = false;
-            this.topnOptLimitThreshold = 0;
             this.enableSyncRuntimeFilterSize = true;
         } else {
             this.rewriteOrToInPredicateThreshold = 2;
             this.enableFunctionPushdown = true;
             this.enableDeleteSubPredicateV2 = true;
-            this.topnOptLimitThreshold = 1024;
             this.enableSyncRuntimeFilterSize = false;
         }