diff --git a/script/jitter_scan.py b/script/jitter_scan.py
index f34c82e..90c5e6e 100644
--- a/script/jitter_scan.py
+++ b/script/jitter_scan.py
@@ -1,7 +1,7 @@
 
 
 
-
+import  ch.psi.pshell.epics.ControlledVariable as ControlledVariable
 import ch.psi.pshell.epics.Channel as Channel
 
 latency = 0.3