diff --git a/src/Dictionaries/MongoDBDictionarySource.h b/src/Dictionaries/MongoDBDictionarySource.h
index 190ffb1af91..e73b40be858 100644
--- a/src/Dictionaries/MongoDBDictionarySource.h
+++ b/src/Dictionaries/MongoDBDictionarySource.h
@@ -27,9 +27,7 @@ namespace ErrorCodes
     extern const int NOT_IMPLEMENTED;
 }
 
-#    if POCO_VERSION < 0x01070800
 void authenticate(Poco::MongoDB::Connection & connection, const std::string & database, const std::string & user, const std::string & password);
-#    endif
 
 std::unique_ptr<Poco::MongoDB::Cursor> createCursor(const std::string & database, const std::string & collection, const Block & sample_block_to_select);
 
diff --git a/src/Storages/StorageMongoDB.cpp b/src/Storages/StorageMongoDB.cpp
index 2f27042b162..adfdd10db6f 100644
--- a/src/Storages/StorageMongoDB.cpp
+++ b/src/Storages/StorageMongoDB.cpp
@@ -1,21 +1,16 @@
 #include "StorageMongoDB.h"
 
-#include <Poco/MongoDB/Array.h>
 #include <Poco/MongoDB/Connection.h>
 #include <Poco/MongoDB/Cursor.h>
 #include <Poco/MongoDB/Database.h>
-#include <Poco/MongoDB/ObjectId.h>
-#include <Poco/Util/AbstractConfiguration.h>
 #include <Poco/Version.h>
 #include <Storages/StorageFactory.h>
 #include <Interpreters/evaluateConstantExpression.h>
 #include <Core/Settings.h>
 #include <Interpreters/Context.h>
 #include <DataStreams/IBlockOutputStream.h>
-#include <Formats/FormatFactory.h>
 #include <Common/parseAddress.h>
 #include <IO/Operators.h>
-#include <IO/WriteHelpers.h>
 #include <Parsers/ASTLiteral.h>
 #include <Processors/Sources/SourceFromInputStream.h>
 #include <Processors/Pipe.h>