diff --git a/Platform/macOS/Display/Base.lproj/VMDisplayWindow.xib b/Platform/macOS/Display/Base.lproj/VMDisplayWindow.xib
index f002c7ff9..ca62560c4 100644
--- a/Platform/macOS/Display/Base.lproj/VMDisplayWindow.xib
+++ b/Platform/macOS/Display/Base.lproj/VMDisplayWindow.xib
@@ -33,6 +33,7 @@
         <customObject id="-3" userLabel="Application" customClass="NSObject"/>
         <window title="UTM" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" toolbarStyle="compact" id="QvC-M9-y7g">
             <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+            <windowCollectionBehavior key="collectionBehavior" fullScreenPrimary="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
             <rect key="contentRect" x="196" y="240" width="800" height="600"/>
             <rect key="screenRect" x="0.0" y="0.0" width="1728" height="1079"/>