diff --git a/lib/puma/single.rb b/lib/puma/single.rb
index 41a725c0..9dd070ef 100644
--- a/lib/puma/single.rb
+++ b/lib/puma/single.rb
@@ -58,7 +58,7 @@ module Puma
             # Must use exit! so we don't unwind and run the ensures
             # that will be run by the new child (such as deleting the
             # pidfile)
-            exit!
+            exit!(true)
           end
 
           Signal.trap "SIGCHLD" do