diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index d5aff77e3..eed65e882 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -1,7 +1,7 @@
 variables:
   buildConfiguration: Release
   buildTag: $[ startsWith(variables['Build.SourceBranch'], 'refs/tags') ]
-  buildNumber: $[ variables('Build.BuildNumber') ]
+  buildNumber: $[ variables['Build.BuildNumber'] ]
 
 
 jobs: