diff --git a/src/corelib/tools/qarraydata.cpp b/src/corelib/tools/qarraydata.cpp
index 328d39cde9..42b57415bb 100644
--- a/src/corelib/tools/qarraydata.cpp
+++ b/src/corelib/tools/qarraydata.cpp
@@ -112,6 +112,7 @@ void QArrayData::deallocate(QArrayData *data, size_t objectSize,
     if (data == &qt_array_unsharable_empty)
         return;
 
+    Q_ASSERT_X(!data->ref.isStatic(), "QArrayData::deallocate", "Static data can not be deleted");
     ::free(data);
 }