diff --git a/cflm/cflm.py b/cflm/cflm.py
index 39aeaa0bb2823b387853d1070ae3e8201cc7fbb7..01bc1d9e12ddc2ff236c988c66389edb38cb4b83 100644
--- a/cflm/cflm.py
+++ b/cflm/cflm.py
@@ -319,7 +319,7 @@ def main():
     visManager.Initialize()
 
     UImanager = g4b.G4UImanager.GetUIpointer()
-    UImanager.ApplyCommand("/control/execute paras/g4macro/init_vis.mac")
+    UImanager.ApplyCommand("/control/execute param_file/g4macro/init_vis.mac")
     UImanager.ApplyCommand('/run/initialize')
     UImanager.ApplyCommand('/tracking/verbose 2')
     UImanager.ApplyCommand('/run/beamOn 100000')