diff --git a/.azure/pipelines/apply-semantic-versioning-to-assembyinfo-files.yml b/.azure/pipelines/apply-semantic-versioning-to-assembyinfo-files.yml
index 97d9384f..88e83d2c 100644
--- a/.azure/pipelines/apply-semantic-versioning-to-assembyinfo-files.yml
+++ b/.azure/pipelines/apply-semantic-versioning-to-assembyinfo-files.yml
@@ -12,7 +12,7 @@ steps:
     script: |
       [string]$ApplicationName = '${{parameters.ApplicationName}}'
       [string]$PathToSearch = '${{parameters.PathToSearch}}'
-      [string]$BuildNumber = $(Build.BuildNumber)
+      [string]$BuildNumber = $env:BUILD_BUILDNUMBER
       [string]$SearchFilter = 'AssemblyInfo.*'
 
       [string]$PatternSplitCharacters = '.'