diff --git a/src/api-wrappers/AXUIElement.swift b/src/api-wrappers/AXUIElement.swift
index 17d82663..2d7ebd51 100644
--- a/src/api-wrappers/AXUIElement.swift
+++ b/src/api-wrappers/AXUIElement.swift
@@ -75,7 +75,7 @@ extension AXUIElement {
 
         // Some non-windows have cgWindowId == 0 (e.g. windows of apps starting at login with the checkbox "Hidden" checked)
         return wid != 0 &&
-            books(runningApp) || (
+            (books(runningApp) || keynote(runningApp)) || (
             // CGWindowLevel == .normalWindow helps filter out iStats Pro and other top-level pop-overs, and floating windows
             isOnNormalLevel &&
                 ([kAXStandardWindowSubrole, kAXDialogSubrole].contains(subrole) ||
@@ -91,7 +91,14 @@ extension AXUIElement {
                     drBetotte(runningApp)))
     }
 
+    private func keynote(_ runningApp: NSRunningApplication) -> Bool {
+        // apple Keynote has a fake fullscreen window when in presentation mode
+        // it covers the screen with a AXUnknown window instead of using standard fullscreen mode
+        return runningApp.bundleIdentifier == "com.apple.iWork.Keynote"
+    }
+
     private func openBoard(_ runningApp: NSRunningApplication) -> Bool {
+        // OpenBoard is a ported app which doesn't use standard macOS windows
         return runningApp.bundleIdentifier == "org.oe-f.OpenBoard"
     }