diff --git a/cmake/modules/CheckIfQtGuiCanBeExecuted.cmake b/cmake/modules/CheckIfQtGuiCanBeExecuted.cmake
index 69eda9e98..80dc591bd 100644
--- a/cmake/modules/CheckIfQtGuiCanBeExecuted.cmake
+++ b/cmake/modules/CheckIfQtGuiCanBeExecuted.cmake
@@ -1,31 +1,31 @@
 # Copyright (C) 2016 Jarosław Staniek <staniek@kde.org>
 #
 # Redistribution and use is allowed according to the terms of the BSD license.
 # For details see the accompanying COPYING-CMAKE-SCRIPTS file.
 
 # Global variables
 # KEXI_QTGUI_RUNTIME_AVAILABLE - TRUE if Qt GUI can be used at runtime for configuration and test apps
 #
 # CMake options
 # KEXI_ENABLE_QTGUI_FOR_TESTS - TRUE if configuration or test apps that require Qt GUI
 #                               should be executed; by default equal to ${KEXI_QTGUI_RUNTIME_AVAILABLE}
 
 if(NOT DEFINED KEXI_QTGUI_RUNTIME_AVAILABLE)
     set(KEXI_QTGUI_RUNTIME_AVAILABLE TRUE CACHE BOOL "TRUE if Qt GUI can be used at runtime for configuration and test apps")
-    if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "BSD")
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "BSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "GNU")
         execute_process(COMMAND xset q # check presence of X11; TODO support Wayland, etc.
             RESULT_VARIABLE XSET_RESULT
         )
         if(NOT ${XSET_RESULT} EQUAL 0)
             set(KEXI_QTGUI_RUNTIME_AVAILABLE FALSE)
         endif()
     endif()
     mark_as_advanced(KEXI_QTGUI_RUNTIME_AVAILABLE)
 endif()
 
 if(NOT KEXI_QTGUI_RUNTIME_AVAILABLE)
     message(STATUS "Note: Graphical interface is not available so configuration and test apps that require Qt GUI won't be executed")
 endif()
 
 option(KEXI_ENABLE_QTGUI_FOR_TESTS "Enable using GUI for running tests or configuration programs. Switch it off if your build environment."
        ${KEXI_QTGUI_RUNTIME_AVAILABLE})