diff --git a/bob/rppg/chrom/script/extract_pulse.py b/bob/rppg/chrom/script/extract_pulse.py
index 74d74c32338ea98ddb824e15abd76bda8661c29f..26e0fcb8ebd7fa2785aa0e82f8ae62376d7c43d7 100644
--- a/bob/rppg/chrom/script/extract_pulse.py
+++ b/bob/rppg/chrom/script/extract_pulse.py
@@ -20,7 +20,7 @@ Usage:
 Options:
   -h, --help                Show this screen
   -V, --version             Show version
-  -p, --protocol=<string>   Protocol.
+  -p, --protocol=<string>   Protocol [default: all].
   -s, --subset=<string>     Data subset to load. If nothing is provided 
                             all the data sets will be loaded.
   -o, --pulsedir=<path>     The path to the directory where signal extracted 
@@ -99,8 +99,8 @@ def main(user_input=None):
   configuration = load([os.path.join(args['<configuration>'])])
  
   # get various parameters, either from config file or command-line 
-  protocol = get_parameter(args, configuration, 'protocol', 'None')
-  subset = get_parameter(args, configuration, 'subset', '')
+  protocol = get_parameter(args, configuration, 'protocol', 'all')
+  subset = get_parameter(args, configuration, 'subset', None)
   pulsedir = get_parameter(args, configuration, 'pulsedir', 'pulse')
   start = get_parameter(args, configuration, 'start', 0)
   end = get_parameter(args, configuration, 'end', 0)
diff --git a/bob/rppg/chrom/script/extract_pulse_from_mask.py b/bob/rppg/chrom/script/extract_pulse_from_mask.py
index 6a25c4e4e1eebcfcb57d65aef503396c78a0e613..15cfac0259bccde1a355efec6059daca51f50493 100644
--- a/bob/rppg/chrom/script/extract_pulse_from_mask.py
+++ b/bob/rppg/chrom/script/extract_pulse_from_mask.py
@@ -18,7 +18,7 @@ Usage:
 Options:
   -h, --help                Show this screen
   -V, --version             Show version
-  -p, --protocol=<string>   Protocol.
+  -p, --protocol=<string>   Protocol [default: all].
   -s, --subset=<string>     Data subset to load. If nothing is provided 
                             all the data sets will be loaded.
   -o, --pulsedir=<path>     The path to the directory where signal extracted 
@@ -103,8 +103,8 @@ def main(user_input=None):
   configuration = load([os.path.join(args['<configuration>'])])
  
   # get various parameters, either from config file or command-line 
-  protocol = get_parameter(args, configuration, 'protocol', 'None')
-  subset = get_parameter(args, configuration, 'subset', '')
+  protocol = get_parameter(args, configuration, 'protocol', 'all')
+  subset = get_parameter(args, configuration, 'subset', None)
   pulsedir = get_parameter(args, configuration, 'pulsedir', 'pulse')
   npoints = get_parameter(args, configuration, 'npoints', 40)
   indent = get_parameter(args, configuration, 'indent', 10)