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diff --git a/docs/code-quality/lint/linters/eslint-plugin-mozilla/prefer-boolean-length-check.rst b/docs/code-quality/lint/linters/eslint-plugin-mozilla/prefer-boolean-length-check.rst
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+++ b/docs/code-quality/lint/linters/eslint-plugin-mozilla/prefer-boolean-length-check.rst
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+prefer-boolean-length-check
+===========================
+
+Prefers using a boolean length check rather than comparing against zero.
+
+Examples of incorrect code for this rule:
+-----------------------------------------
+
+.. code-block:: js
+
+    if (foo.length == 0) {}
+    if (foo.length > 0) {}
+    if (foo && foo.length == 0) {}
+    function bar() { return foo.length > 0 }
+
+Examples of correct code for this rule:
+---------------------------------------
+
+.. code-block:: js
+
+    if (foo.length && foo.length) {}
+    if (!foo.length) {}
+    var a = foo.length > 0
+    function bar() { return !!foo.length }