diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,7 +14,7 @@
 cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
 
 set(QT_MIN_VERSION     "5.4.0")
-set(KF5_MIN_VERSION    "5.18.0")
+set(KF5_MIN_VERSION    "5.25.0")
 set(PLASMA_MIN_VERSION "5.4.0")
 
 find_package(ECM ${KF5_MIN_VERSION} REQUIRED NO_MODULE)
diff --git a/src/Gui/KSMainWindow.cpp b/src/Gui/KSMainWindow.cpp
--- a/src/Gui/KSMainWindow.cpp
+++ b/src/Gui/KSMainWindow.cpp
@@ -39,6 +39,7 @@
 #include <KStandardGuiItem>
 #include <KHelpMenu>
 #include <KAboutData>
+#include <KWindowSystem>
 
 #include "SettingsDialog/SettingsDialog.h"
 #include "ExportMenu.h"
@@ -67,7 +68,7 @@
     // credits for this goes to Thomas Lübking <thomas.luebking@gmail.com>
 
 #ifdef XCB_FOUND
-    if (qApp->platformName() == QStringLiteral("xcb")) {
+    if (KWindowSystem::isPlatformX11()) {
         // create a window if we haven't already. note that the QWidget constructor
         // should already have done this
 
diff --git a/src/SpectacleCore.cpp b/src/SpectacleCore.cpp
--- a/src/SpectacleCore.cpp
+++ b/src/SpectacleCore.cpp
@@ -62,7 +62,7 @@
     }
 
 #ifdef XCB_FOUND
-    if (qApp->platformName() == QStringLiteral("xcb")) {
+    if (KWindowSystem::isPlatformX11()) {
         mImageGrabber = new X11ImageGrabber;
     }
 #endif