diff --git a/activemodel/lib/active_model/conversion.rb b/activemodel/lib/active_model/conversion.rb
index 585c20dcdf..23724b2d95 100644
--- a/activemodel/lib/active_model/conversion.rb
+++ b/activemodel/lib/active_model/conversion.rb
@@ -30,7 +30,7 @@ module ActiveModel
       self
     end
 
-    # Returns an Enumerable of all (primary) key attributes or nil if persisted? is fakse
+    # Returns an Enumerable of all (primary) key attributes or nil if persisted? is false
     def to_key
       persisted? ? [id] : nil
     end