diff --git a/stack.sh b/stack.sh
index 375be28..d97139a 100755
--- a/stack.sh
+++ b/stack.sh
@@ -643,6 +643,7 @@
 
 # Rabbit connection info
 if is_service_enabled rabbit; then
+    RABBIT_USERID=${RABBIT_USERID:-stackrabbit}
     RABBIT_HOST=${RABBIT_HOST:-$SERVICE_HOST}
     read_password RABBIT_PASSWORD "ENTER A PASSWORD TO USE FOR RABBIT."
 fi