diff --git a/src/ui/dictheadwords.cc b/src/ui/dictheadwords.cc
index 646fae0b..b10f2413 100644
--- a/src/ui/dictheadwords.cc
+++ b/src/ui/dictheadwords.cc
@@ -123,6 +123,7 @@ void DictHeadwords::setup( Dictionary::Class * dict_ )
   QApplication::setOverrideCursor( Qt::WaitCursor );
 
   dict = dict_;
+  sortedWords.clear();
 
   setWindowTitle( QString::fromUtf8( dict->getName().c_str() ) );