diff --git a/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb b/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb
index 6891c66839..6283bd0981 100644
--- a/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb
+++ b/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb
@@ -7,7 +7,7 @@ end
 
 # It is recommend to use <tt>class_attribute</tt> over methods defined in this file. Please
 # refer to documentation for <tt>class_attribute</tt> for more information. Officially it is not
-# deprected but <tt>class_attribute</tt> is faster.
+# deprecated but <tt>class_attribute</tt> is faster.
 #
 # Allows attributes to be shared within an inheritance hierarchy. Each descendant gets a copy of
 # their parents' attributes, instead of just a pointer to the same. This means that the child can add elements