diff --git a/src/libs/vlayout/vlayoutgenerator.cpp b/src/libs/vlayout/vlayoutgenerator.cpp
index a3d405d54..65d4a52b2 100644
--- a/src/libs/vlayout/vlayoutgenerator.cpp
+++ b/src/libs/vlayout/vlayoutgenerator.cpp
@@ -99,7 +99,7 @@ int VLayoutGenerator::DetailsCount()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void VLayoutGenerator::Generate(QElapsedTimer timer, qint64 timeout, LayoutErrors previousState)
+void VLayoutGenerator::Generate(const QElapsedTimer &timer, qint64 timeout, LayoutErrors previousState)
 {
     stopGeneration.store(false);
     papers.clear();
diff --git a/src/libs/vlayout/vlayoutgenerator.h b/src/libs/vlayout/vlayoutgenerator.h
index 400bb8b39..ba6a5f8d0 100644
--- a/src/libs/vlayout/vlayoutgenerator.h
+++ b/src/libs/vlayout/vlayoutgenerator.h
@@ -79,7 +79,7 @@ public:
     qreal GetShift() const;
     void  SetShift(qreal shift);
 
-    void Generate(QElapsedTimer timer, qint64 timeout, LayoutErrors previousState = LayoutErrors::NoError);
+    void Generate(const QElapsedTimer &timer, qint64 timeout, LayoutErrors previousState = LayoutErrors::NoError);
 
     qreal LayoutEfficiency() const;