diff --git a/script/jitter_scan.py b/script/jitter_scan.py
index 6850504..fd2bfe7 100644
--- a/script/jitter_scan.py
+++ b/script/jitter_scan.py
@@ -79,7 +79,7 @@ mva_hvps.initialize()
 #################################################################################
 # scan
 
-hvps = mva.hvps.read()
+hvps = mva_hvps.read()
 
 # define current amplitude as saturation amplitude, then define three scans
 amplt_sat = cv_rf_amplt.read()