diff --git a/src/libs/vtools/dialogs/tools/dialogtool.cpp b/src/libs/vtools/dialogs/tools/dialogtool.cpp
index 030fa8253..f8440db8d 100644
--- a/src/libs/vtools/dialogs/tools/dialogtool.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogtool.cpp
@@ -129,13 +129,13 @@ bool DoublePoint(const VPieceNode &firstNode, const VPieceNode &secondNode, cons
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-bool DoubleCurve(const VPieceNode &firstNode, const VPieceNode &secondNode, const VContainer *data)
+bool DoubleCurve(const VPieceNode &firstNode, const VPieceNode &secondNode)
 {
     if (firstNode.GetTypeTool() != Tool::NodePoint && not (firstNode.GetId() == NULL_ID)
             && secondNode.GetTypeTool() != Tool::NodePoint && not (secondNode.GetId() == NULL_ID))
     {
         // don't ignore the same curve twice
-        if (data->GetGObject(firstNode.GetId())->getIdObject() == data->GetGObject(secondNode.GetId())->getIdObject())
+        if (firstNode.GetId() == secondNode.GetId())
         {
             return true;
         }
@@ -556,7 +556,7 @@ bool DialogTool::DoublePoints(QListWidget *listWidget, const VContainer *data)
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-bool DialogTool::DoubleCurves(QListWidget *listWidget, const VContainer *data)
+bool DialogTool::DoubleCurves(QListWidget *listWidget)
 {
     SCASSERT(listWidget != nullptr);
     for (int i=0, sz = listWidget->count()-1; i<sz; ++i)
@@ -565,7 +565,7 @@ bool DialogTool::DoubleCurves(QListWidget *listWidget, const VContainer *data)
         const VPieceNode firstNode = RowNode(listWidget, firstIndex);
         const VPieceNode secondNode = RowNode(listWidget, FindNotExcludedNodeDown(listWidget, firstIndex+1));
 
-        if (DoubleCurve(firstNode, secondNode, data))
+        if (DoubleCurve(firstNode, secondNode))
         {
             return true;
         }
diff --git a/src/libs/vtools/dialogs/tools/dialogtool.h b/src/libs/vtools/dialogs/tools/dialogtool.h
index 2ccca452a..6ff54c365 100644
--- a/src/libs/vtools/dialogs/tools/dialogtool.h
+++ b/src/libs/vtools/dialogs/tools/dialogtool.h
@@ -214,7 +214,7 @@ protected:
     static int       FindNotExcludedNodeUp(QListWidget *listWidget, int candidate);
     static bool      FirstPointEqualLast(QListWidget *listWidget, const VContainer *data);
     static bool      DoublePoints(QListWidget *listWidget, const VContainer *data);
-    static bool      DoubleCurves(QListWidget *listWidget, const VContainer *data);
+    static bool      DoubleCurves(QListWidget *listWidget);
     static bool      EachPointLabelIsUnique(QListWidget *listWidget);
     static QString   DialogWarningIcon();
     static QFont     NodeFont(QFont font, bool nodeExcluded = false);
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp b/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
index 27e4c28b7..e578b1606 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
@@ -1598,7 +1598,7 @@ bool DialogPiecePath::PathIsValid() const
             ui->helpLabel->setText(url);
             return false;
         }
-        else if (DoubleCurves(ui->listWidget, data))
+        else if (DoubleCurves(ui->listWidget))
         {
             url += tr("The same curve repeats twice!");
             ui->helpLabel->setText(url);
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
index a8658bfee..7f8f05b55 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
@@ -2563,7 +2563,7 @@ bool DialogSeamAllowance::MainPathIsValid() const
             uiTabPaths->helpLabel->setText(url);
             valid = false;
         }
-        else if (DoubleCurves(uiTabPaths->listWidgetMainPath, data))
+        else if (DoubleCurves(uiTabPaths->listWidgetMainPath))
         {
             url += tr("The same curve repeats twice!");
             uiTabPaths->helpLabel->setText(url);