diff --git a/.pipelines/ci/templates/run-ui-tests-ci.yml b/.pipelines/ci/templates/run-ui-tests-ci.yml
index 9488a71f77..bdbd29bf25 100644
--- a/.pipelines/ci/templates/run-ui-tests-ci.yml
+++ b/.pipelines/ci/templates/run-ui-tests-ci.yml
@@ -41,7 +41,7 @@ jobs:
     inputs:
       OperationType: 'Start'
       WADArguments: 127.0.0.1 4723
-      AgentResolution: 1080p
+      AgentResolution: '1080p'
 
   - task: VSTest@2
     displayName: 'UI Tests'