diff --git a/src/corelib/tools/qarraydataops.h b/src/corelib/tools/qarraydataops.h
index 0c7703c5880..4ee09a4dfb8 100644
--- a/src/corelib/tools/qarraydataops.h
+++ b/src/corelib/tools/qarraydataops.h
@@ -711,6 +711,7 @@ public:
                 data->ptr -= nInserts;
             data->size += nInserts;
         }
+        Q_DISABLE_COPY(Inserter)
 
         T *displace(qsizetype pos, qsizetype n)
         {