diff --git a/dbms/src/Dictionaries/PolygonDictionary.cpp b/dbms/src/Dictionaries/PolygonDictionary.cpp
index 63d609343bc..9cf7878dfeb 100644
--- a/dbms/src/Dictionaries/PolygonDictionary.cpp
+++ b/dbms/src/Dictionaries/PolygonDictionary.cpp
@@ -27,6 +27,8 @@ IPolygonDictionary::IPolygonDictionary(
         , source_ptr(std::move(source_ptr_))
         , dict_lifetime(dict_lifetime_)
 {
+    createAttributes();
+    loadData();
 }
 
 std::string IPolygonDictionary::getName() const
@@ -132,7 +134,7 @@ void IPolygonDictionary::calculateBytesAllocated()
 
 }
 
-void IPolygonDictionary::has(const Columns &key_columns, const DataTypes &key_types, PaddedPODArray<UInt8> &out) {
+void IPolygonDictionary::has(const Columns &key_columns, const DataTypes &key_types, PaddedPODArray<UInt8> &out) const {
     // TODO: Use constant in error message?
     if (key_types.size() != DIM)
         throw Exception{"Expected two columns of coordinates", ErrorCodes::BAD_ARGUMENTS};
@@ -228,8 +230,6 @@ std::shared_ptr<const IExternalLoadable> SimplePolygonDictionary::clone() const
             this->dict_lifetime);
 }
 
-void SimplePolygonDictionary::generate() {}
-
 bool SimplePolygonDictionary::find(const Point &point, size_t & id) const
 {
     for (size_t i = 0; i < (this->polygons).size(); ++i)
diff --git a/dbms/src/Dictionaries/PolygonDictionary.h b/dbms/src/Dictionaries/PolygonDictionary.h
index ed8dfff4077..1c5ae8b519a 100644
--- a/dbms/src/Dictionaries/PolygonDictionary.h
+++ b/dbms/src/Dictionaries/PolygonDictionary.h
@@ -50,7 +50,7 @@ public:
     BlockInputStreamPtr getBlockInputStream(const Names & column_names, size_t max_block_size) const override;
 
     // TODO: Refactor design to perform stronger checks, i.e. make this an override.
-    void has(const Columns & key_columns, const DataTypes & key_types, PaddedPODArray<UInt8> & out) ;
+    void has(const Columns & key_columns, const DataTypes & key_types, PaddedPODArray<UInt8> & out) const;
 
 protected:
     using Point = bg::model::point<Float64, 2, bg::cs::cartesian>;
@@ -59,7 +59,6 @@ protected:
 
     std::vector<MultiPolygon> polygons;
 
-    virtual void generate() = 0;
     virtual bool find(const Point & point, size_t & id) const = 0;
 
     const std::string name;
@@ -101,7 +100,6 @@ public:
     std::shared_ptr<const IExternalLoadable> clone() const override;
 
 private:
-    void generate() override;
     bool find(const Point & point, size_t & id) const override;
 };