diff --git a/libs/resources/KisResourcesInterface_p.h b/libs/resources/KisResourcesInterface_p.h
index 6b96b5a4c9..33c2b0133f 100644
--- a/libs/resources/KisResourcesInterface_p.h
+++ b/libs/resources/KisResourcesInterface_p.h
@@ -1,64 +1,64 @@
 /*
  *  Copyright (c) 2020 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 #ifndef KisResourcesInterface_P_H
 #define KisResourcesInterface_P_H
 
 #include "kritaresources_export.h"
 #include "KisResourcesInterface.h"
 #include <unordered_map>
 #include <memory>
 
 #include <QReadWriteLock>
 #include <QReadLocker>
 #include <QWriteLocker>
 
 #include "kis_assert.h"
 
-#if (QT_VERSION <= QT_VERSION_CHECK(5, 12, 0))
+#if (QT_VERSION < QT_VERSION_CHECK(5, 13, 0))
 namespace std
 {
     template<> struct hash<QString>
     {
         std::size_t operator()(const QString &s) const noexcept {
             return qHash(s);
         }
     };
 }
 #endif
 
 class KRITARESOURCES_EXPORT KisResourcesInterfacePrivate
 {
 public:
     mutable std::unordered_map<QString,
                        std::unique_ptr<
                            KisResourcesInterface::ResourceSourceAdapter>> sourceAdapters;
     mutable QReadWriteLock lock;
 
     KisResourcesInterface::ResourceSourceAdapter* findExistingSource(const QString &type) const {
         auto it = this->sourceAdapters.find(type);
         if (it != this->sourceAdapters.end()) {
             KIS_ASSERT(bool(it->second));
 
             return it->second.get();
         }
 
         return nullptr;
     }
 };
 
 #endif // KisResourcesInterface_P_H