diff --git a/sw/inc/pagepreviewlayout.hxx b/sw/inc/pagepreviewlayout.hxx
index e7340ca19cfd..21bff253382a 100644
--- a/sw/inc/pagepreviewlayout.hxx
+++ b/sw/inc/pagepreviewlayout.hxx
@@ -624,7 +624,7 @@ public:
 
         @author FME
     */
-    sal_uInt16 GetNumberOfPreviewPages() { return maPrevwPages.size(); }
+    sal_uInt16 GetNumberOfPreviewPages() { return sal::static_int_cast< sal_uInt16 >(maPrevwPages.size()); }
 };
 
 #endif // _PAGEPREVIEWLAYOUT_HXX