diff --git a/base/etc/services.d/psiphon/finish b/base/etc/services.d/psiphon/finish
new file mode 100755
index 0000000..8a878d4
--- /dev/null
+++ b/base/etc/services.d/psiphon/finish
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if test "$1" -eq 256 ; then
+  e=$((128 + $2))
+else
+  e="$1"
+fi
+
+echo "$e" > /run/s6-linux-init-container-results/exitcode