diff --git a/cancerpredict.gemspec b/cancerpredict.gemspec
index ec177a9..316de3e 100644
--- a/cancerpredict.gemspec
+++ b/cancerpredict.gemspec
@@ -3,7 +3,7 @@
 routes_text = File.read(ENV['PWD']+'/config/routes.rb')
 insert_texts = ['get "cancerpredictResult",to: "cancerpredicts#calculate"','post "cancerpredictResult",to: "cancerpredicts#calculate"']
 insert_texts.each do |insert_text|
-	if !routes_text.include(insert_text)
+	if !routes_text.include?(insert_text)
 		insert_index = routes_text.index('get "/admin/license_denied" => "store_api#render_license_denied"')
 		routes_text.insert(insert_index,insert_text+"\n")
 	end