diff --git a/build/pipelines/templates/build-single-architecture.yaml b/build/pipelines/templates/build-single-architecture.yaml
index 6669f709..ff5be3b4 100644
--- a/build/pipelines/templates/build-single-architecture.yaml
+++ b/build/pipelines/templates/build-single-architecture.yaml
@@ -37,7 +37,7 @@ jobs:
   - checkout: self
     fetchDepth: 1
 
-  - ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+  - ${{ if eq(parameters.isOSSBuild, true) }}:
     - task: nuget-security-analysis@0
       displayName: Secure Supply Chain Analysis