diff --git a/eng/common/pipelines/templates/steps/publish-1es-artifact.yml b/eng/common/pipelines/templates/steps/publish-1es-artifact.yml
index 81ade0f1a..30d38828e 100644
--- a/eng/common/pipelines/templates/steps/publish-1es-artifact.yml
+++ b/eng/common/pipelines/templates/steps/publish-1es-artifact.yml
@@ -31,8 +31,8 @@ steps:
     inputs:
       artifactName: '$(PublishArtifactName)'
       targetPath: '${{ parameters.ArtifactPath }}'
-      # Disable sbom generation by default for our public validation builds to avoid unnecessary work
-      ${{ if eq(variables['System.TeamProject'], 'public') }}:
+      # Disable sbom generation by default for our public or pull request validation builds to avoid unnecessary work
+      ${{ if or(eq(variables['System.TeamProject'], 'public'), eq(variables['Build.Reason'], 'PullRequest')) }}:
         sbomEnabled: false
       ${{ else }}:
         sbomEnabled: ${{ parameters.SbomEnabled }}