diff --git a/bob/bio/base/tools/command_line.py b/bob/bio/base/tools/command_line.py
index 2cdc11f975fd6473ccf95bfdfa2d6c3cece7537b..c1a4a11e35b68b202f4cffbe4dba1961b62f240f 100644
--- a/bob/bio/base/tools/command_line.py
+++ b/bob/bio/base/tools/command_line.py
@@ -460,7 +460,7 @@ def initialize(parsers, command_line_parameters=None, skips=[]):
         zt_score_directories=[os.path.join(args.temp_directory, protocol, s) for s in args.zt_directories],
         compressed_extension='.tar.bz2' if args.write_compressed_score_files else '',
         default_extension='.hdf5',
-    zt_norm = args.zt_norm
+        zt_norm = args.zt_norm
     )
 
     return args