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-rw-r--r--src/tools/qdoc/node.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/tools/qdoc/node.cpp b/src/tools/qdoc/node.cpp
index 2d38720a36..b00276a58c 100644
--- a/src/tools/qdoc/node.cpp
+++ b/src/tools/qdoc/node.cpp
@@ -2474,7 +2474,7 @@ QString Node::fullDocumentName() const
be used as the value of an \e id attribute. Search for NCName
on the internet for details of what can be an NCName.
*/
-QString Node::cleanId(QString str)
+QString Node::cleanId(const QString &str)
{
QString clean;
QString name = str.simplified();