diff --git a/article_inspect.cpp b/article_inspect.cpp
index 40b3d112..dc0e69c0 100644
--- a/article_inspect.cpp
+++ b/article_inspect.cpp
@@ -20,15 +20,9 @@ void ArticleInspector::setInspectPage( QWebEngineView * view )
 {
   auto page=view->page();
   viewContainer->page()->setInspectedPage(page);
-#if( QT_VERSION > QT_VERSION_CHECK( 6, 0, 0 ) )
+#if( QT_VERSION > QT_VERSION_CHECK( 6, 3, 0 ) || QT_VERSION < QT_VERSION_CHECK( 6, 0, 0 ) )
   // without this line, application will crash on qt6.2 ,see https://bugreports.qt.io/browse/QTBUG-101724
-  // and seems to hangup forever on qt6.3 ,so the best solution for now is to comment out the following lines.
-
-  // if( view->lastContextMenuRequest())
-  // {
-  //   page->triggerAction( QWebEnginePage::InspectElement );
-  // }
-#else
+  // and seems to hangup forever on qt6.3.0 ,so the best solution for now is to comment out the following lines.
   page->triggerAction( QWebEnginePage::InspectElement );
 #endif
 
diff --git a/dsl.cc b/dsl.cc
index b7ffbf34..a873f6bb 100644
--- a/dsl.cc
+++ b/dsl.cc
@@ -322,7 +322,7 @@ DslDictionary::DslDictionary( string const & id,
 
   resourceDir1 = getDictionaryFilenames()[ 0 ] + ".files" + FsEncoding::separator();
   QString s = FsEncoding::decode( getDictionaryFilenames()[ 0 ].c_str() );
-  if( s.endsWith( QString::fromLatin1( ".dz", Qt::CaseInsensitive ) ) )
+  if( s.endsWith( QString::fromLatin1( ".dz" ), Qt::CaseInsensitive ) )
     s.chop( 3 );
   resourceDir2 = FsEncoding::encode( s ) + ".files" + FsEncoding::separator();
 
diff --git a/dsl_details.cc b/dsl_details.cc
index 465309ac..965ce1c6 100644
--- a/dsl_details.cc
+++ b/dsl_details.cc
@@ -1151,6 +1151,11 @@ void processUnsortedParts( wstring & str, bool strip )
 void expandOptionalParts( wstring & str, list< wstring > * result,
                           size_t x, bool inside_recurse )
 {
+  // if str is too long ,it can never be headwords.
+  if( str.size() > 100 )
+  {
+    return;
+  }
   list< wstring > expanded;
   list< wstring > * headwords;
   headwords = inside_recurse ? result : &expanded;