diff --git a/src/Storages/PostgreSQL/PostgreSQLConnectionPool.cpp b/src/Storages/PostgreSQL/PostgreSQLConnectionPool.cpp
index 86b0a1ae5e5..68c0e22f83c 100644
--- a/src/Storages/PostgreSQL/PostgreSQLConnectionPool.cpp
+++ b/src/Storages/PostgreSQL/PostgreSQLConnectionPool.cpp
@@ -19,7 +19,6 @@ PostgreSQLConnectionPool::PostgreSQLConnectionPool(
 {
     address = host + ':' + std::to_string(port);
     connection_str = formatConnectionString(std::move(dbname), std::move(host), port, std::move(user), std::move(password));
-    initialize();
 }
 
 
@@ -28,7 +27,6 @@ PostgreSQLConnectionPool::PostgreSQLConnectionPool(const PostgreSQLConnectionPoo
         , connection_str(other.connection_str)
         , address(other.address)
 {
-    initialize();
 }
 
 
@@ -45,14 +43,6 @@ std::string PostgreSQLConnectionPool::formatConnectionString(
 }
 
 
-void PostgreSQLConnectionPool::initialize()
-{
-    /// No connection is made, just fill pool with non-connected connection objects.
-    for (size_t i = 0; i < POSTGRESQL_POOL_DEFAULT_SIZE; ++i)
-        pool->push(std::make_shared<PostgreSQLConnection>(connection_str, address));
-}
-
-
 PostgreSQLConnectionHolderPtr PostgreSQLConnectionPool::get()
 {
     PostgreSQLConnectionPtr connection;
diff --git a/src/Storages/PostgreSQL/PostgreSQLConnectionPool.h b/src/Storages/PostgreSQL/PostgreSQLConnectionPool.h
index 3922cde7c04..c07eb936a3c 100644
--- a/src/Storages/PostgreSQL/PostgreSQLConnectionPool.h
+++ b/src/Storages/PostgreSQL/PostgreSQLConnectionPool.h
@@ -41,8 +41,6 @@ private:
     static std::string formatConnectionString(
         std::string dbname, std::string host, UInt16 port, std::string user, std::string password);
 
-    void initialize();
-
     PoolPtr pool;
     std::string connection_str, address;
 };