diff --git a/src/Common/HashTable/ClearableHashSet.h b/src/Common/HashTable/ClearableHashSet.h
index 87d02f6e8ac..db6a4e487e6 100644
--- a/src/Common/HashTable/ClearableHashSet.h
+++ b/src/Common/HashTable/ClearableHashSet.h
@@ -90,7 +90,8 @@ public:
         this->m_size = 0;
 
         /// clear ZeroValueStorage
-        this->clearHasZero();
+        if (this->hasZero())
+            this->clearHasZero();
     }
 };
 
@@ -113,7 +114,8 @@ public:
         this->m_size = 0;
 
         /// clear ZeroValueStorage
-        this->clearHasZero();
+        if (this->hasZero())
+            this->clearHasZero();
     }
 };
 
diff --git a/tests/queries/0_stateless/02733_fix_distinct_in_order_bug_49622.sql b/tests/queries/0_stateless/02733_fix_distinct_in_order_bug_49622.sql
index b9953226c2a..9501a2c0761 100644
--- a/tests/queries/0_stateless/02733_fix_distinct_in_order_bug_49622.sql
+++ b/tests/queries/0_stateless/02733_fix_distinct_in_order_bug_49622.sql
@@ -1,8 +1,8 @@
 set optimize_distinct_in_order=1;
 
-DROP TABLE IF EXISTS test;
+DROP TABLE IF EXISTS test_string;
 
-CREATE TABLE test
+CREATE TABLE test_string
 (
     `c1` String,
     `c2` String
@@ -10,6 +10,6 @@ CREATE TABLE test
 ENGINE = MergeTree
 ORDER BY c1;
 
-INSERT INTO test(c1, c2) VALUES ('1',  ''), ('2', '');
+INSERT INTO test_string(c1, c2) VALUES ('1',  ''), ('2', '');
 
-SELECT DISTINCT c2, c1 FROM test FORMAT TSV;
+SELECT DISTINCT c2, c1 FROM test_string;