diff --git a/omas/omas_machine.py b/omas/omas_machine.py
index a8f31de3..9ec54316 100644
--- a/omas/omas_machine.py
+++ b/omas/omas_machine.py
@@ -19,6 +19,7 @@
 try:
     from omas.machine_mappings import mast
 except ImportError:
+    print('Could not import mast machine mappings. Check that pyuda is installed')
     pass