diff --git a/src/RepairGUIAdv/union_edges.py b/src/RepairGUIAdv/union_edges.py
index f3c07b48e..dd27be457 100644
--- a/src/RepairGUIAdv/union_edges.py
+++ b/src/RepairGUIAdv/union_edges.py
@@ -30,7 +30,7 @@ class UnionEdgesDlg(SubShapesBaseDlg):
     """
     Dialog for Union Edges plugin that unifies edges of selected face.
     """
-    def __init__(self, selection_level = GEOM.FACE):
+    def __init__(self, selection_level = GEOM.EDGE):
         SubShapesBaseDlg.__init__(
             self, 'Union Edges', 'union_edges_algo.py', False, selection_level, 1)