diff --git a/dbms/src/Common/HashTable/FixedClearableHashMap.h b/dbms/src/Common/HashTable/FixedClearableHashMap.h
index 7f8f739893b..ab808b56f34 100644
--- a/dbms/src/Common/HashTable/FixedClearableHashMap.h
+++ b/dbms/src/Common/HashTable/FixedClearableHashMap.h
@@ -36,7 +36,6 @@ struct FixedClearableHashMapCell
         }
         Key key;
         FixedClearableHashMapCell * ptr;
-        Key & getFirstMutable() { return key; }
         const Key & getFirst() const { return key; }
         Mapped & getSecond() { return ptr->mapped; }
         const Mapped & getSecond() const { return *ptr->mapped; }
diff --git a/dbms/src/Common/HashTable/FixedClearableHashSet.h b/dbms/src/Common/HashTable/FixedClearableHashSet.h
index 915875ebda4..f22e41fcd4e 100644
--- a/dbms/src/Common/HashTable/FixedClearableHashSet.h
+++ b/dbms/src/Common/HashTable/FixedClearableHashSet.h
@@ -23,7 +23,6 @@ struct FixedClearableHashTableCell
     struct CellExt
     {
         Key key;
-        value_type & getValueMutable() { return key; }
         const value_type & getValue() const { return key; }
         void update(Key && key_, FixedClearableHashTableCell *) { key = key_; }
     };
diff --git a/dbms/src/Common/HashTable/FixedHashMap.h b/dbms/src/Common/HashTable/FixedHashMap.h
index d50c87a6583..32a4fabea4d 100644
--- a/dbms/src/Common/HashTable/FixedHashMap.h
+++ b/dbms/src/Common/HashTable/FixedHashMap.h
@@ -39,7 +39,6 @@ struct FixedHashMapCell
         Key key;
         FixedHashMapCell * ptr;
 
-        Key & getFirstMutable() { return key; }
         const Key & getFirst() const { return key; }
         Mapped & getSecond() { return ptr->mapped; }
         const Mapped & getSecond() const { return ptr->mapped; }
diff --git a/dbms/src/Common/HashTable/FixedHashTable.h b/dbms/src/Common/HashTable/FixedHashTable.h
index 0ad56f354b9..b673dbcea8f 100644
--- a/dbms/src/Common/HashTable/FixedHashTable.h
+++ b/dbms/src/Common/HashTable/FixedHashTable.h
@@ -28,7 +28,6 @@ struct FixedHashTableCell
     {
         Key key;
 
-        value_type & getValueMutable() { return key; }
         const value_type & getValue() const { return key; }
         void update(Key && key_, FixedHashTableCell *) { key = key_; }
     };
diff --git a/dbms/src/Common/HashTable/HashMap.h b/dbms/src/Common/HashTable/HashMap.h
index 98669619d3d..ebd7f4280a4 100644
--- a/dbms/src/Common/HashTable/HashMap.h
+++ b/dbms/src/Common/HashTable/HashMap.h
@@ -49,12 +49,10 @@ struct HashMapCell
     HashMapCell(const Key & key_, const State &) : value(key_, NoInitTag()) {}
     HashMapCell(const value_type & value_, const State &) : value(value_) {}
 
-    Key & getFirstMutable() { return value.first; }
     const Key & getFirst() const { return value.first; }
     Mapped & getSecond() { return value.second; }
     const Mapped & getSecond() const { return value.second; }
 
-    value_type & getValueMutable() { return value; }
     const value_type & getValue() const { return value; }
 
     static const Key & getKey(const value_type & value) { return value.first; }
diff --git a/dbms/src/Common/HashTable/HashTable.h b/dbms/src/Common/HashTable/HashTable.h
index 42d74210d4a..dadc73c3f44 100644
--- a/dbms/src/Common/HashTable/HashTable.h
+++ b/dbms/src/Common/HashTable/HashTable.h
@@ -98,7 +98,6 @@ struct HashTableCell
     HashTableCell(const Key & key_, const State &) : key(key_) {}
 
     /// Get what the value_type of the container will be.
-    value_type & getValueMutable() { return key; }
     const value_type & getValue() const { return key; }
 
     /// Get the key.