diff --git a/reactos/subsystems/win32/win32k/eng/mouse.c b/reactos/subsystems/win32/win32k/eng/mouse.c
index 6ba618a5b42..dcd5c2f2b9d 100644
--- a/reactos/subsystems/win32/win32k/eng/mouse.c
+++ b/reactos/subsystems/win32/win32k/eng/mouse.c
@@ -358,7 +358,7 @@ EngSetPointerShape(
             }
         }
     }
-    else
+    else if (psoMask)
     {
         pgp->Size.cx = psoMask->sizlBitmap.cx;
         pgp->Size.cy = psoMask->sizlBitmap.cy / 2;