diff --git a/galpy/actionAngle/actionAngle.py b/galpy/actionAngle/actionAngle.py
index 7aaec4a8b..9948e7524 100644
--- a/galpy/actionAngle/actionAngle.py
+++ b/galpy/actionAngle/actionAngle.py
@@ -177,7 +177,7 @@ def _parse_eval_args(self,*args,**kwargs):
             self._eval_phi= phi
         else: # Orbit instance
             if not kwargs.get('_noOrbUnitsCheck',False):
-                physical_compatible(self,args[0])
+                self._check_consistent_units_orbitInput(args[0])
             if len(args) == 2:
                 orb= args[0](args[1])
             else: