1 files changed, 1 insertions, 1 deletions
diff --git a/src/tools/qdoc/ditaxmlgenerator.h b/src/tools/qdoc/ditaxmlgenerator.h
index a58504d7c7..da05bb0274 100644
--- a/src/tools/qdoc/ditaxmlgenerator.h
+++ b/src/tools/qdoc/ditaxmlgenerator.h
@@ -381,7 +381,7 @@ private:
                              const Node* relative,
                              const NodeMap& classMap,
                              bool includeAlphabet,
-                             QString commonPrefix = QString());
+                             QString commonPrefix);
     void generateFunctionIndex(const Node* relative);
     void generateLegaleseList(const Node* relative, CodeMarker* marker);
     void generateOverviewList(const Node* relative);