diff --git a/src/bmipy/_template.py b/src/bmipy/_template.py
index 981131e..b12907e 100644
--- a/src/bmipy/_template.py
+++ b/src/bmipy/_template.py
@@ -98,6 +98,8 @@ def render_function_signature(
         Annotations for each parameters as well as the return type.
     tabsize : int, optional
         The number of spacses represented by a tab.
+    width : int, optional
+        The maximum width of a line.
 
     Returns
     -------