diff --git a/desktop/org.kde.spectacle.desktop.cmake b/desktop/org.kde.spectacle.desktop.cmake
--- a/desktop/org.kde.spectacle.desktop.cmake
+++ b/desktop/org.kde.spectacle.desktop.cmake
@@ -141,14 +141,16 @@
 Keywords[zh_CN]=snapshot;capture;print;screenshot;snipping;snip;快照;截图;抓取;屏幕截图;截屏;抓屏;截取;
 Keywords[zh_TW]=snapshot;capture;print;screenshot;snipping;snip;截圖;擷取;截圖程式
 Exec=@QtBinariesDir@/qdbus org.kde.Spectacle / StartAgent
+X-KDE-Original-Executable=${CMAKE_INSTALL_PREFIX}/bin/spectacle
 Icon=spectacle
 Type=Application
 Terminal=false
 StartupNotify=false
 Actions=FullScreenScreenShot;CurrentMonitorScreenShot;ActiveWindowScreenShot;RectangularRegionScreenShot;
 X-DBUS-StartupType=Multi
 X-DBUS-ServiceName=org.kde.Spectacle
 X-KDE-Shortcuts=Print
+X-KDE-Wayland-Interfaces=org_kde_kwin_effect-screenshot
 
 [Desktop Action FullScreenScreenShot]
 Name=Capture Entire Desktop
diff --git a/src/Gui/KSMainWindow.cpp b/src/Gui/KSMainWindow.cpp
--- a/src/Gui/KSMainWindow.cpp
+++ b/src/Gui/KSMainWindow.cpp
@@ -226,6 +226,9 @@
     } else if (!mShutterModes.testFlag(Platform::ShutterMode::Immediate)) {
         mKSWidget->lockOnClickEnabled();
     }
+    if (!mShutterModes.testFlag(Platform::ShutterMode::Delayed)) {
+        mKSWidget->delayDisabled();
+    }
     resize(QSize(DEFAULT_WINDOW_WIDTH, DEFAULT_WINDOW_HEIGHT).expandedTo(minimumSize()));
 
     // Allow Ctrl+Q to quit the app
diff --git a/src/Gui/KSWidget.h b/src/Gui/KSWidget.h
--- a/src/Gui/KSWidget.h
+++ b/src/Gui/KSWidget.h
@@ -70,6 +70,7 @@
     void setScreenshotPixmap(const QPixmap &thePixmap);
     void lockOnClickDisabled();
     void lockOnClickEnabled();
+    void delayDisabled();
     void setButtonState(State state);
     void setProgress(double progress);
 
diff --git a/src/Gui/KSWidget.cpp b/src/Gui/KSWidget.cpp
--- a/src/Gui/KSWidget.cpp
+++ b/src/Gui/KSWidget.cpp
@@ -197,14 +197,17 @@
 {
     mCaptureOnClick->setCheckState(Qt::Checked);
     mCaptureOnClick->setEnabled(false);
-    mDelayMsec->setEnabled(false);
 }
 
 void KSWidget::lockOnClickDisabled()
 {
     mCaptureOnClick->setCheckState(Qt::Unchecked);
     mCaptureOnClick->setEnabled(false);
-    mDelayMsec->setEnabled(true);
+}
+
+void KSWidget::delayDisabled()
+{
+    mDelayMsec->setEnabled(false);
 }
 
 // private slots
diff --git a/src/Platforms/Platform.h b/src/Platforms/Platform.h
--- a/src/Platforms/Platform.h
+++ b/src/Platforms/Platform.h
@@ -43,7 +43,8 @@
 
     enum class ShutterMode {
         Immediate = 0x01,
-        OnClick   = 0x02
+        OnClick   = 0x02,
+        Delayed   = 0x03
     };
     using ShutterModes = QFlags<ShutterMode>;
     Q_FLAG(ShutterModes)
diff --git a/src/Platforms/PlatformKWinWayland.cpp b/src/Platforms/PlatformKWinWayland.cpp
--- a/src/Platforms/PlatformKWinWayland.cpp
+++ b/src/Platforms/PlatformKWinWayland.cpp
@@ -93,16 +93,11 @@
 
 Platform::ShutterModes PlatformKWinWayland::supportedShutterModes() const
 {
-    return { ShutterMode::OnClick };
+    return { ShutterMode::Immediate | ShutterMode::OnClick | ShutterMode::Delayed };
 }
 
 void PlatformKWinWayland::doGrab(ShutterMode theShutterMode, GrabMode theGrabMode, bool theIncludePointer, bool theIncludeDecorations)
 {
-    if (theShutterMode != ShutterMode::OnClick) {
-        emit newScreenshotFailed();
-        return;
-    }
-
     switch(theGrabMode) {
     case GrabMode::AllScreens:
         return doGrabHelper(QStringLiteral("screenshotFullscreen"), theIncludePointer);
diff --git a/src/Platforms/PlatformNull.cpp b/src/Platforms/PlatformNull.cpp
--- a/src/Platforms/PlatformNull.cpp
+++ b/src/Platforms/PlatformNull.cpp
@@ -41,7 +41,7 @@
 
 Platform::ShutterModes PlatformNull::supportedShutterModes() const
 {
-    return { ShutterMode::Immediate | ShutterMode::OnClick };
+    return { ShutterMode::Immediate | ShutterMode::OnClick | ShutterMode::Delayed };
 }
 
 void PlatformNull::doGrab(ShutterMode theShutterMode, GrabMode theGrabMode, bool theIncludePointer, bool theIncludeDecorations)
diff --git a/src/Platforms/PlatformXcb.cpp b/src/Platforms/PlatformXcb.cpp
--- a/src/Platforms/PlatformXcb.cpp
+++ b/src/Platforms/PlatformXcb.cpp
@@ -160,7 +160,7 @@
 
 Platform::ShutterModes PlatformXcb::supportedShutterModes() const
 {
-    return { ShutterMode::Immediate | ShutterMode::OnClick };
+    return { ShutterMode::Immediate | ShutterMode::OnClick | ShutterMode::Delayed };
 }
 
 void PlatformXcb::doGrab(ShutterMode theShutterMode, GrabMode theGrabMode, bool theIncludePointer, bool theIncludeDecorations)
diff --git a/src/SpectacleCore.cpp b/src/SpectacleCore.cpp
--- a/src/SpectacleCore.cpp
+++ b/src/SpectacleCore.cpp
@@ -73,8 +73,8 @@
     connect(mPlatform.get(), &Platform::newScreenshotFailed, this, &SpectacleCore::screenshotFailed);
 
     auto lImmediateAvailable = mPlatform->supportedShutterModes().testFlag(Platform::ShutterMode::Immediate);
-    auto lOnClickAvailable = mPlatform->supportedShutterModes().testFlag(Platform::ShutterMode::OnClick);
-    if ((!lOnClickAvailable) && (theDelayMsec < 0)) {
+    auto lDelayedAvailable = mPlatform->supportedShutterModes().testFlag(Platform::ShutterMode::Delayed);
+    if (!lDelayedAvailable || (theDelayMsec < 0)) {
         theDelayMsec = 0;
     }