diff --git a/actionmailer/lib/action_mailer/preview.rb b/actionmailer/lib/action_mailer/preview.rb
index fde0e86f5b..33a9faa7e7 100644
--- a/actionmailer/lib/action_mailer/preview.rb
+++ b/actionmailer/lib/action_mailer/preview.rb
@@ -20,7 +20,7 @@ module ActionMailer
         interceptors.flatten.compact.each { |interceptor| register_preview_interceptor(interceptor) }
       end
 
-      # Register am Interceptor which will be called before mail is previewed.
+      # Register an Interceptor which will be called before mail is previewed.
       # Either a class or a string can be passed in as the Interceptor. If a
       # string is passed in it will be <tt>constantize</tt>d.
       def register_preview_interceptor(interceptor)
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 83347b4a26..e49a0f1323 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -763,7 +763,7 @@
 *   Raise `ActiveRecord::RecordNotDestroyed` when a replaced child
     marked with `dependent: destroy` fails to be destroyed.
 
-    Fixex #12812.
+    Fixes #12812.
 
     *Brian Thomas Storti*