diff --git a/eng/pipelines/templates/jobs/cmake-generate-jobs.yml b/eng/pipelines/templates/jobs/cmake-generate-jobs.yml
index 07001d6f8..bd81036d8 100644
--- a/eng/pipelines/templates/jobs/cmake-generate-jobs.yml
+++ b/eng/pipelines/templates/jobs/cmake-generate-jobs.yml
@@ -27,8 +27,8 @@ jobs:
         Selection: all
         GenerateVMJobs: true
     JobTemplatePath: /eng/pipelines/templates/jobs/cmake-generate.tests.yml
-    OsVmImage: $(LINUXVMIMAGE)
-    Pool: $(LINUXPOOL)
+    OsVmImage: azsdk-pool-mms-ubuntu-2004-1espt
+    Pool: azsdk-pool-mms-ubuntu-2004-general
     GenerateJobName: generate_matrix_cmake
     AdditionalParameters:
       Artifacts: ${{ parameters.Artifacts }}
@@ -43,8 +43,8 @@ jobs:
         Selection: all
         GenerateVMJobs: true
     JobTemplatePath: /eng/pipelines/templates/jobs/cmake-generate.tests.yml
-    OsVmImage: $(LINUXVMIMAGE)
-    Pool: $(LINUXPOOL)
+    OsVmImage: azsdk-pool-mms-ubuntu-2004-1espt
+    Pool: azsdk-pool-mms-ubuntu-2004-general
     GenerateJobName: generate_matrix_cmake_source
     AdditionalParameters:
       Artifacts: ${{ parameters.ArtifactsSource }}
diff --git a/eng/pipelines/templates/jobs/cmake-generate.tests.yml b/eng/pipelines/templates/jobs/cmake-generate.tests.yml
index 76cf41eeb..74c820af4 100644
--- a/eng/pipelines/templates/jobs/cmake-generate.tests.yml
+++ b/eng/pipelines/templates/jobs/cmake-generate.tests.yml
@@ -52,7 +52,12 @@ jobs:
 
   pool:
     name: $(Pool)
-    vmImage: $(OSVmImage)
+    # 1es pipeline templates converts `image` to demands: ImageOverride under the hood
+    # which is incompatible with image selection in the default non-1es hosted pools
+    ${{ if eq(parameters.OSName, 'macOS') }}:
+      vmImage: $(OSVmImage)
+    ${{ else }}:
+      image: $(OSVmImage)
     os: ${{ parameters.OSName }}
 
   ${{ if eq(parameters.UsePlatformContainer, 'true') }}: