1 files changed, 2 insertions, 2 deletions
diff --git a/src/particles/qquickgroupgoal_p.h b/src/particles/qquickgroupgoal_p.h
index 5d385f2f36..e51cb86e07 100644
--- a/src/particles/qquickgroupgoal_p.h
+++ b/src/particles/qquickgroupgoal_p.h
@@ -70,13 +70,13 @@ protected:
 
 Q_SIGNALS:
 
-    void goalStateChanged(QString arg);
+    void goalStateChanged(const QString &arg);
 
     void jumpChanged(bool arg);
 
 public Q_SLOTS:
 
-    void setGoalState(QString arg);
+    void setGoalState(const QString &arg);
 
     void setJump(bool arg)
     {