diff --git a/km3buu/cmd.py b/km3buu/cmd.py
index a32b5a2fcf8d34a3ebdf4890abde68e8b617718b..b2e1a0f8ed9465cea9af48ff83b701c03b0e8fae 100755
--- a/km3buu/cmd.py
+++ b/km3buu/cmd.py
@@ -11,7 +11,7 @@ from os.path import join
 
 from km3buu.jobcard import generate_neutrino_jobcard
 from km3buu.ctrl import run_jobcard
-from km3buu.geometry import CanVolume, SphericalVolume, NoVolume
+from km3buu.geometry import CANVolume, SphericalVolume, NoVolume
 from km3buu.output import GiBUUOutput, write_detector_file
 
 ARGPARSE_DESC = {
@@ -237,7 +237,7 @@ def main():
             kwargs["zmin"] = args.dimensions[0]
             kwargs["zmax"] = args.dimensions[1]
             kwargs["radius"] = args.dimensions[2]
-        volume = CanVolume(**kwargs)
+        volume = CANVolume(**kwargs)
     run_descriptor = ""
     if args.runnumber:
         run_descriptor = "run{:08d}_".format(args.runnumber)