diff --git a/src/BasicGUI/BasicGUI_LineDlg.cxx b/src/BasicGUI/BasicGUI_LineDlg.cxx
index 17451f049..1a7f2d26b 100644
--- a/src/BasicGUI/BasicGUI_LineDlg.cxx
+++ b/src/BasicGUI/BasicGUI_LineDlg.cxx
@@ -177,6 +177,7 @@ bool BasicGUI_LineDlg::ClickOnApply()
     return false;
 
   initName();
+  myEditCurrentArgument->setText("");
   ConstructorsClicked(getConstructorId());
   return true;
 }