diff --git a/frappy_psi/magfield.py b/frappy_psi/magfield.py
index f4f02c6..c57099f 100644
--- a/frappy_psi/magfield.py
+++ b/frappy_psi/magfield.py
@@ -140,6 +140,15 @@ class SimpleMagfield(HasStates, Drivable):
         self.setFastPoll(True, 1.0)
         return self.start_ramp_to_target
 
+    @status_code(Status.RAMPING)
+    def start_ramp_to_target(self, sm):
+        """start ramping current to target field
+
+        initiate ramp to target
+        the implementation should return ramp_to_target
+        """
+        raise NotImplementedError
+
     @status_code(BUSY, 'ramping field')
     def ramp_to_target(self, sm):
         if sm.init:
@@ -324,15 +333,6 @@ class Magfield(SimpleMagfield):
         self._last_target = sm.target
         return self.start_ramp_to_target
 
-    @status_code(Status.RAMPING)
-    def start_ramp_to_target(self, sm):
-        """start ramping current to target field
-
-        initiate ramp to target
-        the implementation should return ramp_to_target
-        """
-        raise NotImplementedError
-
     @status_code(Status.RAMPING)
     def ramp_to_target(self, sm):
         dif = abs(self.value - sm.target)