diff --git a/activerecord/lib/active_record/connection_adapters/connection_specification.rb b/activerecord/lib/active_record/connection_adapters/connection_specification.rb
index b316107e37d6f16bf1cbe8887bf9732fe28adf01..9f210c5f33a526d2fb9a71d97ad63a86c3ef7ce4 100644
--- a/activerecord/lib/active_record/connection_adapters/connection_specification.rb
+++ b/activerecord/lib/active_record/connection_adapters/connection_specification.rb
@@ -112,7 +112,7 @@ def initialize(configurations)
         #
         #   configurations = { "production" => { "host" => "localhost", "database" => "foo", "adapter" => "sqlite3" } }
         #   Resolver.new(configurations).resolve(:production)
-        #   # => {host: "localhost", database: "foo", adapter: "sqlite3"}
+        #   # => { "host" => "localhost", "database" => "foo", "adapter" => "sqlite3"}
         #
         # Initialized with URL configuration strings.
         #