diff --git a/src/MeasureGUI/MeasureGUI_AnnotationDlg.cxx b/src/MeasureGUI/MeasureGUI_AnnotationDlg.cxx
index ffe7a327c..d6dfb03bc 100755
--- a/src/MeasureGUI/MeasureGUI_AnnotationDlg.cxx
+++ b/src/MeasureGUI/MeasureGUI_AnnotationDlg.cxx
@@ -263,6 +263,7 @@ void MeasureGUI_AnnotationDlg::Init()
 
     redisplayPreview();
   } else { // edition
+    myIsPositionDefined = true;
     mySelectionMode = TopAbs_SHAPE;
     // find annotation
     GEOMGUI_TextTreeWdg* aTextTreeWdg = myGeomGUI->GetTextTreeWdg();