diff --git a/superxas_bec/scans/exafs_scan.py b/superxas_bec/scans/exafs_scan.py
index a73e0f2..6f463c1 100644
--- a/superxas_bec/scans/exafs_scan.py
+++ b/superxas_bec/scans/exafs_scan.py
@@ -39,7 +39,7 @@ class EXAFSScan(ScanBase):
         self.k_step_conversion = 3.81
         self._check_and_upated_input_arguments()
         if motor is None:
-            default_motor = "kb_slit_y"
+            default_motor = "mono_energy"
             motor = default_motor  # TODO Remove that motor, put energy of mono
         self.motor = motor
         super().__init__(exp_time=0, relative=False, settling_time=settling_time, **kwargs)