diff --git a/release/models/platform/openconfig-platform.yang b/release/models/platform/openconfig-platform.yang
index d45dbecce..3ddb6cef4 100644
--- a/release/models/platform/openconfig-platform.yang
+++ b/release/models/platform/openconfig-platform.yang
@@ -546,7 +546,7 @@ module openconfig-platform {
     }
 
     leaf model-name {
-      when "../removable = 'true' or ../type = 'CHASSIS'";
+      when "../removable = 'true' or ../type = 'oc-platform-types:CHASSIS'";
       mandatory true;
       type string;
       description