diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines
index ed4e443a3c..390ceece52 100644
--- a/Documentation/CodingGuidelines
+++ b/Documentation/CodingGuidelines
@@ -91,8 +91,6 @@ For shell scripts specifically (not exhaustive):
 
    - No shell arrays.
 
-   - No strlen ${#parameter}.
-
    - No pattern replacement ${parameter/pattern/string}.
 
  - We use Arithmetic Expansion $(( ... )).