diff --git a/src/shared/akstd.h b/src/shared/akstd.h
--- a/src/shared/akstd.h
+++ b/src/shared/akstd.h
@@ -19,6 +19,7 @@
 
 #ifndef AKSTD_H_
 #define AKSTD_H_
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
 
 #include <functional>
 
@@ -43,5 +44,5 @@
 #endif
 
 }
-
+#endif
 #endif