diff --git a/src/editor/editwrapper.cpp b/src/editor/editwrapper.cpp
index f8642463..c48eefd8 100644
--- a/src/editor/editwrapper.cpp
+++ b/src/editor/editwrapper.cpp
@@ -1451,8 +1451,12 @@ void EditWrapper::updateHighlighterAll()
             return;
         }
 
+        int blockCount = 0;
         for (QTextBlock var = beginBlock; var != endBlock; var = var.next()) {
             m_pSyntaxHighlighter->rehighlightBlock(var);
+            if (++blockCount % 100 == 0) {
+                qApp->processEvents();
+            }
         }
 
         m_pSyntaxHighlighter->rehighlightBlock(endBlock);
diff --git a/src/widgets/window.cpp b/src/widgets/window.cpp
index 91a9af10..e6a0ad16 100644
--- a/src/widgets/window.cpp
+++ b/src/widgets/window.cpp
@@ -2441,7 +2441,6 @@ void Window::popupPrintDialog()
         return;
     }
 
-    DPrinter printer(QPrinter::HighResolution);
     m_isNewPrint = true;
     m_pPreview = new DPrintPreviewDialog(this);
     m_pPreview->setAttribute(Qt::WA_DeleteOnClose);