diff --git a/config/initializers/nonce.rb b/config/initializers/nonce.rb
new file mode 100644
index 0000000..4fecea7
--- /dev/null
+++ b/config/initializers/nonce.rb
@@ -0,0 +1 @@
+NONCE_TIME_TO_LIVE = 300  # seconds
diff --git a/lti2_tp/config/initializers/lti2_tp.rb b/lti2_tp/config/initializers/lti2_tp.rb
index 1e58478..7aedea1 100644
--- a/lti2_tp/config/initializers/lti2_tp.rb
+++ b/lti2_tp/config/initializers/lti2_tp.rb
@@ -1,11 +1,10 @@
 include Lti2Commons
 include WireLogSupport
 
-NONCE_TIME_TO_LIVE = 300  # seconds
 Rails.application.config.nonce_cache = Cache.new :ttl => NONCE_TIME_TO_LIVE
 
 if ActiveRecord::Base.connection.table_exists? 'lti2_tp_registries'
   Rails.application.config.tool_provider_registry = Lti2Tp::ToolProviderRegistry.new
 end
 
-Rails.application.config.wire_log = WireLog.new "ToolProvider", File.expand_path("../tc_sample_app/public/wirelog.html")
\ No newline at end of file
+Rails.application.config.wire_log = WireLog.new "ToolProvider", File.expand_path("../tc_sample_app/public/wirelog.html")