diff --git a/src/dsp_tools/xmllib/value_checkers.py b/src/dsp_tools/xmllib/value_checkers.py
index 2108ea35f..802259a37 100644
--- a/src/dsp_tools/xmllib/value_checkers.py
+++ b/src/dsp_tools/xmllib/value_checkers.py
@@ -46,6 +46,10 @@ def is_bool_like(value: Any) -> bool:
     Checks if a value is a bool or can be converted into a bool.
     It is case-insensitive, meaning that the words can also be capitalised.
 
+    Accepted values:
+         - `false`, `0`, `0.0`, `no`, `non`, `nein` -> `False`
+         - `true`, `1`, `1.0`, `yes`, `oui`, `ja` -> `True`
+
     Args:
         value: value to check
 
diff --git a/src/dsp_tools/xmllib/value_converters.py b/src/dsp_tools/xmllib/value_converters.py
index dc654bab0..190a70b72 100644
--- a/src/dsp_tools/xmllib/value_converters.py
+++ b/src/dsp_tools/xmllib/value_converters.py
@@ -34,8 +34,6 @@ def convert_to_bool(value: Any) -> bool:
         ```
 
         ```python
-        # because this is not an accepted value, it is returned as a string
-
         result = xmllib.convert_to_bool_string(None)
         # raises InputError
         ```