diff --git a/ShoulderCase/@Muscle/getForceResultant.m b/ShoulderCase/@Muscle/getForceResultant.m
index e3e76ce..41f8a84 100644
--- a/ShoulderCase/@Muscle/getForceResultant.m
+++ b/ShoulderCase/@Muscle/getForceResultant.m
@@ -1,8 +1,8 @@
 function output = getForceResultant(obj)
   applicationPoint = mean(obj.forceApplicationPoint, 1);
   forceResultant = Vector(applicationPoint, applicationPoint);
-  for i = 1:size(obj.subdivisions, 3)
+  for i = 1:size(obj.forceVector, 3)
     forceResultant = forceResultant + obj.forceVector(i);
   end
   output = forceResultant;
 end
\ No newline at end of file