diff --git a/freecad/gears/features.py b/freecad/gears/features.py
index 9d93b0b..8cf4f9d 100644
--- a/freecad/gears/features.py
+++ b/freecad/gears/features.py
@@ -83,7 +83,7 @@ def make_attachable(self, obj):
         # Needed to make this object "attachable",
         # aka able to attach parameterically to other objects
         # cf. https://wiki.freecadweb.org/Scripted_objects_with_attachment
-        if int(App.Version()[1]) >= 19:
+        if int(float(App.Version()[1])) >= 18:
             obj.addExtension('Part::AttachExtensionPython')
         else:
             obj.addExtension('Part::AttachExtensionPython', obj)