diff --git a/.azure/azure-ci-build-pipeline.yaml b/.azure/azure-ci-build-pipeline.yaml
index bb9c03fa..9c21577b 100644
--- a/.azure/azure-ci-build-pipeline.yaml
+++ b/.azure/azure-ci-build-pipeline.yaml
@@ -7,8 +7,8 @@ trigger:
 - release/*
 
 strategy:
-  matrix:
-    ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+  ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+    matrix:
       UbuntuPython38:
         python.version: '3.8'
         imageName: 'ubuntu-latest'
@@ -27,7 +27,8 @@ strategy:
       MacOSPython310:
         python.version: '3.10'
         imageName: 'macOS-latest'
-    ${{ if not(eq(variables['Build.Reason'], 'PullRequest')) }}:
+  ${{ if not(eq(variables['Build.Reason'], 'PullRequest')) }}:
+    matrix:
       UbuntuPython310:
         python.version: '3.10'
         imageName: 'ubuntu-latest'