diff --git a/ShoulderCase/@Scapula/measureFriedmansLine.m b/ShoulderCase/@Scapula/measureFriedmansLine.m
index 6e80ea4..0d3f575 100644
--- a/ShoulderCase/@Scapula/measureFriedmansLine.m
+++ b/ShoulderCase/@Scapula/measureFriedmansLine.m
@@ -1,6 +1,6 @@
 function measureFriedmansLine(obj)
   % The Friedman's line goes through the glenoid center and the medial border of
   % the scapula.
 
-  obj.friedmansLine = obj.glenoid.center - obj.trigonumSpinae;
+  obj.friedmansLine = Vector(obj.glenoid.center, obj.trigonumSpinae);
 end
\ No newline at end of file