diff --git a/src/kcmkwin/kwinrules/CMakeLists.txt b/src/kcmkwin/kwinrules/CMakeLists.txt
index 7379bb41d1..d1e8c5d0de 100644
--- a/src/kcmkwin/kwinrules/CMakeLists.txt
+++ b/src/kcmkwin/kwinrules/CMakeLists.txt
@@ -33,7 +33,6 @@ set(kwin_kcm_rules_XCB_LIBS
 set(kcm_libs
     Qt::Quick
     Qt::QuickWidgets
-    Qt::X11Extras
 
     KF5::KCMUtils
     KF5::I18n
diff --git a/src/kcmkwin/kwinrules/rulesmodel.cpp b/src/kcmkwin/kwinrules/rulesmodel.cpp
index 8c09c86903..70b875b96a 100644
--- a/src/kcmkwin/kwinrules/rulesmodel.cpp
+++ b/src/kcmkwin/kwinrules/rulesmodel.cpp
@@ -14,7 +14,6 @@
 #include <QIcon>
 #include <QQmlEngine>
 #include <QtDBus>
-#include <QX11Info>
 
 #include <KColorSchemeManager>
 #include <KConfig>
@@ -435,7 +434,7 @@ void RulesModel::populateRuleList()
                          QIcon::fromTheme("resizerow")));
 
     RuleItem *desktops;
-    if (QX11Info::isPlatformX11()) {
+    if (KWindowSystem::isPlatformX11()) {
         // Single selection of Virtual Desktop on X11
         desktops = new RuleItem(QLatin1String("desktops"),
                                 RulePolicy::SetRule, RuleItem::Option,