diff --git a/device-types/Juniper/PTX10001-MR.yml b/device-types/Juniper/PTX10001-MR.yml
index 6249bbba7..0d6a3773e 100644
--- a/device-types/Juniper/PTX10001-MR.yml
+++ b/device-types/Juniper/PTX10001-MR.yml
@@ -4,7 +4,7 @@ model: PTX10001-MR
 slug: juniper-ptx10001-mr
 u_height: 1.0
 is_full_depth: true
-airflow: rear-to-front
+airflow: front-to-rear
 weight: 18
 weight_unit: kg
 comments: '[Juniper PTX10001 Data Sheet](https://www.juniper.net/us/en/products/routers/ptx-series/ptx10001-36mr-packet-transport-router.html)'