1 files changed, 4 insertions, 1 deletions
diff --git a/Userland/Libraries/LibGUI/Window.cpp b/Userland/Libraries/LibGUI/Window.cpp
index 648371985d..07a3de700e 100644
--- a/Userland/Libraries/LibGUI/Window.cpp
+++ b/Userland/Libraries/LibGUI/Window.cpp
@@ -788,8 +788,11 @@ OwnPtr<WindowBackingStore> Window::create_backing_store(const Gfx::IntSize& size
 
     // FIXME: Plumb scale factor here eventually.
     auto bitmap = Gfx::Bitmap::create_with_anonymous_buffer(format, buffer, size, 1, {});
-    if (!bitmap)
+    if (!bitmap) {
+        VERIFY(size.width() <= INT16_MAX);
+        VERIFY(size.height() <= INT16_MAX);
         return {};
+    }
     return make<WindowBackingStore>(bitmap.release_nonnull());
 }