diff --git a/native/Avalonia.Native/src/OSX/WindowImpl.mm b/native/Avalonia.Native/src/OSX/WindowImpl.mm
index 5a57715b55..ee3e2c4569 100644
--- a/native/Avalonia.Native/src/OSX/WindowImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowImpl.mm
@@ -591,6 +591,10 @@ NSWindowStyleMask WindowImpl::CalculateStyleMask() {
 
         case SystemDecorationsBorderOnly:
             s = s | NSWindowStyleMaskTitled | NSWindowStyleMaskFullSizeContentView;
+            
+            if (_canResize && _isEnabled) {
+                s = s | NSWindowStyleMaskResizable;
+            }
             break;
 
         case SystemDecorationsFull: