diff --git a/README.md b/README.md
index 9eaa2b7..26de7b2 100644
--- a/README.md
+++ b/README.md
@@ -656,7 +656,7 @@ Let's suppose we have common logic across many AASM models. We can embody this l
 
 ```ruby
 class CustomAASMBase < AASM::Base
-  # A custom transiton that we want available across many AASM models.
+  # A custom transition that we want available across many AASM models.
   def count_transitions!
     klass.class_eval do
       aasm with_klass: CustomAASMBase do
diff --git a/spec/models/simple_custom_example.rb b/spec/models/simple_custom_example.rb
index fe51c3f..20ca7d3 100644
--- a/spec/models/simple_custom_example.rb
+++ b/spec/models/simple_custom_example.rb
@@ -1,5 +1,5 @@
 class CustomAASMBase < AASM::Base
-  # A custom transiton that we want available across many AASM models.
+  # A custom transition that we want available across many AASM models.
   def count_transitions!
     klass.class_eval do
       aasm :with_klass => CustomAASMBase do