diff --git a/.iex.exs b/.iex.exs
index 188bff0..8257693 100644
--- a/.iex.exs
+++ b/.iex.exs
@@ -19,9 +19,9 @@ alias Definitions.Tables.Email, as: E
 alias Definitions.Tables.Movie, as: M
 
 # Create Tables
-Table.create(U)
-Table.create(E)
-Table.create(M)
+Table.create!(U)
+Table.create!(E)
+Table.create!(M)
 
 # Seed with some values
 U.seed
diff --git a/README.md b/README.md
index e4832e8..2407b87 100644
--- a/README.md
+++ b/README.md
@@ -129,8 +129,8 @@ end
 Once you have defined your schemas, you need to create them before you can interact with them:
 
 ```elixir
-:ok = Memento.Table.create(Blog.Author)
-:ok = Memento.Table.create(Blog.Post)
+Memento.Table.create!(Blog.Author)
+Memento.Table.create!(Blog.Post)
 ```
 
 See the [`Memento.Table`][docs-table] documentation for detailed examples and more information about all the options.