1 files changed, 1 insertions, 1 deletions
diff --git a/src/tools/qdoc/node.h b/src/tools/qdoc/node.h
index df41aa00ff..610ab0875e 100644
--- a/src/tools/qdoc/node.h
+++ b/src/tools/qdoc/node.h
@@ -305,7 +305,7 @@ public:
     const QString& outputSubdirectory() const { return outSubDir_; }
     void setOutputSubdirectory(const QString& t) { outSubDir_ = t; }
     QString fullDocumentName() const;
-    static QString cleanId(QString str);
+    static QString cleanId(const QString &str);
     QString idForNode() const;
 
     static FlagValue toFlagValue(bool b);