diff --git a/src/kemal.cr b/src/kemal.cr
index cec46aeb..843f89e4 100644
--- a/src/kemal.cr
+++ b/src/kemal.cr
@@ -89,10 +89,10 @@ module Kemal
   end
 
   private def self.setup_trap_signal
-    Process.on_interrupt {
+    Process.on_interrupt do
       log "#{Kemal.config.app_name} is going to take a rest!" if Kemal.config.shutdown_message
       Kemal.stop
       exit
-    }
+    end
   end
 end