diff --git a/kcmkwin/kwinoptions/mouse.cpp b/kcmkwin/kwinoptions/mouse.cpp
index 41e0e94148..51a80f9d8d 100644
--- a/kcmkwin/kwinoptions/mouse.cpp
+++ b/kcmkwin/kwinoptions/mouse.cpp
@@ -489,6 +489,8 @@ const char* const tbl_All[] = {
     "Raise",
     "Lower",
     "Minimize",
+    "Decrease Opacity",
+    "Increase Opacity",
     "Nothing",
     ""
 };
@@ -827,6 +829,8 @@ KWindowActionsConfig::KWindowActionsConfig(bool _standAlone, KConfig *_config, c
           << i18n("Raise")
           << i18n("Lower")
           << i18n("Minimize")
+          << i18n("Decrease Opacity")
+          << i18n("Increase Opacity")
           << i18n("Nothing");
 
     combo = new KComboBox(box);
diff --git a/options.cpp b/options.cpp
index 6522e44210..19c3ee524c 100644
--- a/options.cpp
+++ b/options.cpp
@@ -399,6 +399,8 @@ Options::MouseCommand Options::mouseCommand(const QString &name, bool restricted
     if (lowerName == "minimize") return MouseMinimize;
     if (lowerName == "start window tab drag") return MouseClientGroupDrag;
     if (lowerName == "close") return MouseClose;
+    if (lowerName == "increase opacity") return MouseOpacityMore;
+    if (lowerName == "decrease opacity") return MouseOpacityLess;
     if (lowerName == "nothing") return MouseNothing;
     return MouseNothing;
 }