diff --git a/java-bigquery/.cloudbuild/samples_build.yaml b/java-bigquery/.cloudbuild/samples_build.yaml
index 354adf972029..ccabd1a9fb34 100644
--- a/java-bigquery/.cloudbuild/samples_build.yaml
+++ b/java-bigquery/.cloudbuild/samples_build.yaml
@@ -20,6 +20,7 @@ steps:
   ]
   env:
   - 'JOB_TYPE=samples'
+  - 'BUILD_SUBDIR=java-bigquery'
   - 'BIGQUERY_PROJECT_ID=cloud-java-ci-sample'
   - 'GOOGLE_CLOUD_PROJECT=cloud-java-ci-sample'
   - 'GCS_BUCKET=java-samples-bigquery'
diff --git a/java-bigquerystorage/.cloudbuild/samples_build.yaml b/java-bigquerystorage/.cloudbuild/samples_build.yaml
index 333515cfd7f8..6ee3da56cc90 100644
--- a/java-bigquerystorage/.cloudbuild/samples_build.yaml
+++ b/java-bigquerystorage/.cloudbuild/samples_build.yaml
@@ -20,6 +20,7 @@ steps:
   ]
   env:
   - 'JOB_TYPE=samples'
+  - 'BUILD_SUBDIR=java-bigquerystorage'
   - 'GOOGLE_CLOUD_PROJECT=cloud-java-ci-sample'
   - 'BIGTABLE_TESTING_INSTANCE=instance'
 - name: gcr.io/cloud-devrel-public-resources/java8
diff --git a/java-datastore/.cloudbuild/samples_build.yaml b/java-datastore/.cloudbuild/samples_build.yaml
index 3dd2ff94ced1..12de85bb085c 100644
--- a/java-datastore/.cloudbuild/samples_build.yaml
+++ b/java-datastore/.cloudbuild/samples_build.yaml
@@ -20,6 +20,7 @@ steps:
   ]
   env:
   - 'JOB_TYPE=samples'
+  - 'BUILD_SUBDIR=java-datastore'
   - 'GOOGLE_CLOUD_PROJECT=cloud-java-ci-sample'
   - 'KOKORO_GITHUB_PULL_REQUEST_NUMBER=$_PR_NUMBER'
 - name: gcr.io/cloud-devrel-public-resources/java11
diff --git a/java-logging/.cloudbuild/samples_build.yaml b/java-logging/.cloudbuild/samples_build.yaml
index 018fdd1fcf9c..ae64e2c27696 100644
--- a/java-logging/.cloudbuild/samples_build.yaml
+++ b/java-logging/.cloudbuild/samples_build.yaml
@@ -19,6 +19,7 @@ steps:
     '.kokoro/build.sh'
   ]
   env:
+  - 'BUILD_SUBDIR=java-logging'
   - 'JOB_TYPE=samples'
   - 'GOOGLE_CLOUD_PROJECT=cloud-java-ci-sample'
 - name: gcr.io/cloud-devrel-public-resources/java8
diff --git a/java-storage/.cloudbuild/samples_build.yaml b/java-storage/.cloudbuild/samples_build.yaml
index c22f133517d0..d9f727b272d7 100644
--- a/java-storage/.cloudbuild/samples_build.yaml
+++ b/java-storage/.cloudbuild/samples_build.yaml
@@ -20,6 +20,7 @@ steps:
   ]
   env:
   - 'JOB_TYPE=samples'
+  - 'BUILD_SUBDIR=java-storage'
   - 'GOOGLE_CLOUD_PROJECT=cloud-java-ci-sample'
   - 'GOOGLE_CLOUD_PROJECT_NUMBER=615621127317'
   - 'IT_SERVICE_ACCOUNT_EMAIL=samples@cloud-java-ci-sample.iam.gserviceaccount.com'