diff --git a/Libraries/LibGUI/Widget.cpp b/Libraries/LibGUI/Widget.cpp
index 10a21e0fe8..9c5cb721f5 100644
--- a/Libraries/LibGUI/Widget.cpp
+++ b/Libraries/LibGUI/Widget.cpp
@@ -739,6 +739,11 @@ bool Widget::is_backmost() const
 Action* Widget::action_for_key_event(const KeyEvent& event)
 {
     Shortcut shortcut(event.modifiers(), (KeyCode)event.key());
+
+    if (!shortcut.is_valid()) {
+        return nullptr;
+    }
+
     Action* found_action = nullptr;
     for_each_child_of_type<Action>([&](auto& action) {
         if (action.shortcut() == shortcut) {