diff --git a/docs/activegraph.rb b/docs/activegraph.rb
index f49c5fc98..37f8368d9 100644
--- a/docs/activegraph.rb
+++ b/docs/activegraph.rb
@@ -1,6 +1,6 @@
 # Usage: rails new myapp -m activegraph.rb
 
-gem 'activegraph', ENV[ACTIVEGRAPH_PATH]&.then { |path| { path: } } || '>= 11.1'
+gem 'activegraph', ENV['ACTIVEGRAPH_PATH']&.then { |path| { path: } } || '>= 11.1'
 
 gem_group :development do
   gem 'neo4j-rake_tasks'