diff --git a/src/ruby/bin/math_server.rb b/src/ruby/bin/math_server.rb
index 5cc7613..1bfe253 100755
--- a/src/ruby/bin/math_server.rb
+++ b/src/ruby/bin/math_server.rb
@@ -183,7 +183,7 @@
   end
 
   s.handle(Calculator)
-  s.run
+  s.run_till_terminated
 end
 
 main