diff --git a/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml b/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
index 05bee40..c8d33c7 100755
--- a/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
+++ b/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
@@ -55,7 +55,7 @@
       type: tosca.nodes.SwitchPort
       properties:
         portId: 8
-	host_learning: false
+        host_learning: false
       requirements:
         - switch:
             node: switch#leaf_1