diff --git a/src/xfel_calibrate/calibrate.py b/src/xfel_calibrate/calibrate.py
index 82fbcdd6865d3406df909f9246be0ebc94513a73..d0e522bf6cf153c305408ab8f436ec153abe60b5 100755
--- a/src/xfel_calibrate/calibrate.py
+++ b/src/xfel_calibrate/calibrate.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 
 import argparse
-import ast
 import inspect
 import locale
 import math