diff --git a/src/corelib/itemmodels/qitemselectionmodel.cpp b/src/corelib/itemmodels/qitemselectionmodel.cpp
index 59a10e9057..9af4fd9133 100644
--- a/src/corelib/itemmodels/qitemselectionmodel.cpp
+++ b/src/corelib/itemmodels/qitemselectionmodel.cpp
@@ -218,13 +218,15 @@ QT_BEGIN_NAMESPACE
 */
 bool QItemSelectionRange::intersects(const QItemSelectionRange &other) const
 {
-    return (isValid() && other.isValid()
-            && parent() == other.parent()
-            && model() == other.model()
+    // isValid() and parent() last since they are more expensive
+    return (model() == other.model()
             && ((top() <= other.top() && bottom() >= other.top())
                 || (top() >= other.top() && top() <= other.bottom()))
             && ((left() <= other.left() && right() >= other.left())
-                || (left() >= other.left() && left() <= other.right())));
+                || (left() >= other.left() && left() <= other.right()))
+            && parent() == other.parent()
+            && isValid() && other.isValid()
+            );
 }
 
 /*!