diff --git a/samples/snippets/v3/cloud-client/snippets.py b/samples/snippets/v3/cloud-client/snippets.py
index aa9eae62..d1e70f51 100644
--- a/samples/snippets/v3/cloud-client/snippets.py
+++ b/samples/snippets/v3/cloud-client/snippets.py
@@ -89,8 +89,6 @@ def list_time_series(project_id):
 
     client = monitoring_v3.MetricServiceClient()
     project_name = f"projects/{project_id}"
-    interval = monitoring_v3.TimeInterval()
-
     now = time.time()
     seconds = int(now)
     nanos = int((now - seconds) * 10 ** 9)