diff --git a/src/sonic-config-engine/tests/sample-chassis-packet-lc-graph.xml b/src/sonic-config-engine/tests/sample-chassis-packet-lc-graph.xml
index 183c578385..ac83d87b96 100644
--- a/src/sonic-config-engine/tests/sample-chassis-packet-lc-graph.xml
+++ b/src/sonic-config-engine/tests/sample-chassis-packet-lc-graph.xml
@@ -394,7 +394,7 @@
           <a:DeviceProperty>
             <a:Name>SwitchType</a:Name>
             <a:Reference i:nil="true"/>
-            <a:Value>chassis_packet</a:Value>
+            <a:Value>chassis-packet</a:Value>
           </a:DeviceProperty>
           <a:DeviceProperty>
             <a:Name>DeploymentId</a:Name>
@@ -459,7 +459,7 @@
           <a:DeviceProperty>
             <a:Name>SwitchType</a:Name>
             <a:Reference i:nil="true"/>
-            <a:Value>chassis_packet</a:Value>
+            <a:Value>chassis-packet</a:Value>
           </a:DeviceProperty>
         </a:Properties>
       </a:DeviceMetadata>