diff --git a/src/Mod/CAM/Path/Op/Area.py b/src/Mod/CAM/Path/Op/Area.py
index 4e9f40e974..bd5cc5d193 100644
--- a/src/Mod/CAM/Path/Op/Area.py
+++ b/src/Mod/CAM/Path/Op/Area.py
@@ -131,18 +131,29 @@ class ObjectOp(PathOp.ObjectOp):
         if prop in ["AreaParams", "PathParams", "removalshape"]:
             obj.setEditorMode(prop, 2)
 
-        if prop == "Base" and len(obj.Base) == 1:
-            (base, sub) = obj.Base[0]
+        if hasattr(obj, "Side") and prop == "Base" and len(obj.Base) == 1:
+            (base, subNames) = obj.Base[0]
             bb = base.Shape.BoundBox  # parent boundbox
-            subobj = base.Shape.getElement(sub[0])
-            fbb = subobj.BoundBox  # feature boundbox
 
-            if hasattr(obj, "Side"):
+            if "Face" in subNames[0]:
+                face = base.Shape.getElement(subNames[0])
+                fbb = face.BoundBox  # face boundbox
                 if bb.XLength == fbb.XLength and bb.YLength == fbb.YLength:
                     obj.Side = "Outside"
                 else:
                     obj.Side = "Inside"
 
+            elif "Edge" in subNames[0]:
+                edges = [
+                    base.Shape.getElement(sub).copy() for sub in subNames if sub.startswith("Edge")
+                ]
+                wire = Part.Wire(Part.__sortEdges__(edges))
+                wbb = wire.BoundBox  # wire boundbox
+                if not wire.isClosed() or (bb.XLength == wbb.XLength and bb.YLength == wbb.YLength):
+                    obj.Side = "Outside"
+                else:
+                    obj.Side = "Inside"
+
         self.areaOpOnChanged(obj, prop)
 
     def opOnDocumentRestored(self, obj):