diff --git a/CMakeLists.txt b/CMakeLists.txt
index a94bbe6e8e..034bb23a8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -72,7 +72,6 @@ find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
     I18n
     Init
     Notifications
-    Service
     Package
     Plasma
     WidgetsAddons
@@ -86,6 +85,7 @@ find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
     KCMUtils
     KIO
     NewStuff
+    Service
     XmlGui
 )
 
@@ -502,7 +502,6 @@ set(kwin_KDE_LIBS
     KF5::GlobalAccelPrivate
     KF5::I18n
     KF5::Notifications
-    KF5::Service
     KF5::Package
     KF5::Plasma
     KF5::WindowSystem
diff --git a/config-kwin.h.cmake b/config-kwin.h.cmake
index 181202c007..6128c0ccae 100644
--- a/config-kwin.h.cmake
+++ b/config-kwin.h.cmake
@@ -7,6 +7,7 @@
 #define KWIN_VERSION_STRING "${PROJECT_VERSION}"
 #define XCB_VERSION_STRING "${XCB_VERSION}"
 #define KWIN_KILLER_BIN "${CMAKE_INSTALL_PREFIX}/${LIBEXEC_INSTALL_DIR}/kwin_killer_helper"
+#define KWIN_RULES_DIALOG_BIN "${CMAKE_INSTALL_PREFIX}/${LIBEXEC_INSTALL_DIR}/kwin_rules_dialog"
 #cmakedefine01 HAVE_WAYLAND
 #cmakedefine01 HAVE_WAYLAND_EGL
 #cmakedefine01 HAVE_WAYLAND_CURSOR
diff --git a/main.cpp b/main.cpp
index 53cfbd91a2..2c33f02e52 100644
--- a/main.cpp
+++ b/main.cpp
@@ -533,6 +533,11 @@ bool Application::usesLibinput()
     return s_useLibinput;
 }
 
+QProcessEnvironment Application::processStartupEnvironment() const
+{
+    return QProcessEnvironment::systemEnvironment();
+}
+
 } // namespace
 
 #include "main.moc"
diff --git a/main.h b/main.h
index c97fd709aa..2f447cd169 100644
--- a/main.h
+++ b/main.h
@@ -30,6 +30,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // Qt
 #include <QApplication>
 #include <QAbstractNativeEventFilter>
+#include <QProcessEnvironment>
 
 class QCommandLineParser;
 
@@ -141,6 +142,8 @@ public:
         return m_connection;
     }
 
+    virtual QProcessEnvironment processStartupEnvironment() const;
+
     static void setupMalloc();
     static void setupLocalizedString();
     static void setupLoggingCategoryFilters();
diff --git a/main_wayland.cpp b/main_wayland.cpp
index 5cd353b2d6..9ca37e3997 100644
--- a/main_wayland.cpp
+++ b/main_wayland.cpp
@@ -189,15 +189,14 @@ void ApplicationWayland::continueStartupWithX()
         }
     }
 
+    m_environment.insert(QStringLiteral("DISPLAY"), QString::fromUtf8(qgetenv("DISPLAY")));
     // start the applications passed to us as command line arguments
     if (!m_applicationsToStart.isEmpty()) {
-        QProcessEnvironment environment = m_environment;
-        environment.insert(QStringLiteral("DISPLAY"), QString::fromUtf8(qgetenv("DISPLAY")));
         for (const QString &application: m_applicationsToStart) {
             // note: this will kill the started process when we exit
             // this is going to happen anyway as we are the wayland and X server the app connects to
             QProcess *p = new QProcess(this);
-            p->setProcessEnvironment(environment);
+            p->setProcessEnvironment(m_environment);
             p->start(application);
         }
     }
diff --git a/main_wayland.h b/main_wayland.h
index a7860b8bae..36fb3b5e5c 100644
--- a/main_wayland.h
+++ b/main_wayland.h
@@ -50,6 +50,10 @@ public:
 
     bool notify(QObject *o, QEvent *e) override;
 
+    QProcessEnvironment processStartupEnvironment() const override {
+        return m_environment;
+    }
+
 protected:
     void performStartup() override;
 
diff --git a/rules.cpp b/rules.cpp
index ac97358e11..93856132bf 100644
--- a/rules.cpp
+++ b/rules.cpp
@@ -27,7 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QTemporaryFile>
 #include <QFile>
 #include <QFileInfo>
-#include <ktoolinvocation.h>
 #include <QDebug>
 
 #ifndef KCMRULES
@@ -995,7 +994,19 @@ void RuleBook::edit(AbstractClient* c, bool whole_app)
     args << QStringLiteral("--wid") << QString::number(c->window());
     if (whole_app)
         args << QStringLiteral("--whole-app");
-    KToolInvocation::kdeinitExec(QStringLiteral("kwin_rules_dialog"), args);
+    QProcess *p = new QProcess(this);
+    p->setArguments(args);
+    p->setProcessEnvironment(kwinApp()->processStartupEnvironment());
+    p->setProgram(QStringLiteral(KWIN_RULES_DIALOG_BIN));
+    connect(p, static_cast<void (QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished), this, &QProcess::deleteLater);
+    connect(p, static_cast<void (QProcess::*)(QProcess::ProcessError)>(&QProcess::error), this,
+        [p] (QProcess::ProcessError e) {
+            if (e == QProcess::FailedToStart) {
+                qCDebug(KWIN_CORE) << "Failed to start kwin_rules_dialog";
+            }
+        }
+    );
+    p->start();
 }
 
 void RuleBook::load()
diff --git a/useractions.cpp b/useractions.cpp
index 428d854665..562255d85c 100755
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -47,7 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 
 #include <KProcess>
-#include <KToolInvocation>
 
 #include <QAction>
 #include <QCheckBox>
@@ -307,14 +306,23 @@ void UserActionsMenu::init()
                                         "Window &Manager Settings..."));
         action->setIcon(QIcon::fromTheme(QStringLiteral("configure")));
         connect(action, &QAction::triggered, this,
-            []() {
+            [this]() {
                 // opens the KWin configuration
                 QStringList args;
                 args << QStringLiteral("--icon") << QStringLiteral("preferences-system-windows") << configModules(false);
-                QString error;
-                if (KToolInvocation::kdeinitExec(QStringLiteral("kcmshell5"), args, &error) != 0) {
-                    qCDebug(KWIN_CORE) << "Failed to start kcmshell5: " << error;
-                }
+                QProcess *p = new QProcess(this);
+                p->setArguments(args);
+                p->setProcessEnvironment(kwinApp()->processStartupEnvironment());
+                p->setProgram(QStringLiteral("kcmshell5"));
+                connect(p, static_cast<void (QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished), this, &QProcess::deleteLater);
+                connect(p, static_cast<void (QProcess::*)(QProcess::ProcessError)>(&QProcess::error), this,
+                    [p] (QProcess::ProcessError e) {
+                        if (e == QProcess::FailedToStart) {
+                            qCDebug(KWIN_CORE) << "Failed to start kcmshell5";
+                        }
+                    }
+                );
+                p->start();
             }
         );
     }