diff --git a/doc/changelog.rst b/doc/changelog.rst
index a69fdc19b56a1a1659bbd593a822851a2ca96d39..ac30f40c7ef111e5f4ebec5474b0ec0fee864cea 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -14,7 +14,7 @@ unreleased
 
 - **New Features**
 
-    -  Read signal description from Fast ADC and ADQ412 digitizers :mr:`209`
+    -  Read signal description from Fast ADC and ADQ412 digitizers :mr:`209`, :mr:`212`
 
 1.6.0
 -----
diff --git a/src/toolbox_scs/detectors/digitizers.py b/src/toolbox_scs/detectors/digitizers.py
index 01d8363e21c8265e6a219adee984e0d038238a4f..5b7246db9c11df4fc0221864bc5c14c8fee74cc1 100644
--- a/src/toolbox_scs/detectors/digitizers.py
+++ b/src/toolbox_scs/detectors/digitizers.py
@@ -994,10 +994,8 @@ def digitizer_signal_description(run, digitizer=None):
     
     Parameters
     ----------
-    proposal: int
-        The proposal number
-    runNB: int
-        The run number
+    run: extra_data.DataCollection
+        DataCollection containing the digitizer data.
     digitizer: str or list of str (default=None)
         Name of the digitizer: one in ['FastADC', FastADC2',
         'ADQ412', 'ADQ412_2]