diff --git a/nginx_stage/lib/nginx_stage/session_finder.rb b/nginx_stage/lib/nginx_stage/session_finder.rb
index 2047b7d5d3..c413a8d0c9 100644
--- a/nginx_stage/lib/nginx_stage/session_finder.rb
+++ b/nginx_stage/lib/nginx_stage/session_finder.rb
@@ -1,9 +1,11 @@
+# frozen_string_literal: true
+
 module NginxStage
   module SessionFinder
     def session_count(user)
       `ps  -o cmd -u #{user}`.split("\n").select do |command|
-        command.match?(/Passenger [\w]+App:/)
+        command.match?(/Passenger \w+App:/)
       end.count
     end
   end
-end
\ No newline at end of file
+end