diff --git a/packages/google-cloud-containeranalysis/samples/snippets/samples_test.py b/packages/google-cloud-containeranalysis/samples/snippets/samples_test.py
index 535544e4265f..faab9b1d09ba 100644
--- a/packages/google-cloud-containeranalysis/samples/snippets/samples_test.py
+++ b/packages/google-cloud-containeranalysis/samples/snippets/samples_test.py
@@ -33,7 +33,7 @@
 
 import samples
 
-PROJECT_ID = environ['GCLOUD_PROJECT']
+PROJECT_ID = environ['GOOGLE_CLOUD_PROJECT']
 SLEEP_TIME = 1
 TRY_LIMIT = 20