diff --git a/docs/rules/no-callback-literal.md b/docs/rules/no-callback-literal.md
index 3515ba8f..cb21b5af 100644
--- a/docs/rules/no-callback-literal.md
+++ b/docs/rules/no-callback-literal.md
@@ -6,7 +6,7 @@ When invoking a callback function which uses the Node.js error-first callback pa
 
 ## 📖 Rule Details
 
-When a function is named `cb` or `callback`, then it must be invoked with a first argument that is `undefined`, `null`, an `Error` class, or a subclass or `Error`.
+When a function is named `cb` or `callback`, then it must be invoked with a first argument that is `undefined`, `null`, an `Error` class, or a subclass of `Error`.
 
 Examples of 👎 **incorrect** code for this rule: