diff --git a/.azuredevops/pipelines/templates/variables.yml b/.azuredevops/pipelines/templates/variables.yml
index c52df627d..205e68eaa 100644
--- a/.azuredevops/pipelines/templates/variables.yml
+++ b/.azuredevops/pipelines/templates/variables.yml
@@ -27,4 +27,4 @@ variables:
     value: "4.0.$(Build.BuildId)"
 
   - name: isMain
-    value: $[or(contains(variables['Build.SourceBranch'], 'develop'), contains(variables['Build.SourceBranch'], 'main'))]
\ No newline at end of file
+    value: $[or(eq(variables['Build.SourceBranch'], 'refs/heads/develop'), eq(variables['Build.SourceBranch'], 'refs/heads/main'))]
\ No newline at end of file