diff --git a/demo.py b/demo.py
index 5dc2829..f2eb8e9 100644
--- a/demo.py
+++ b/demo.py
@@ -314,7 +314,7 @@ def demo(client=None):
     nb_inference = 20
 
     logger.info("Pushing %d inferences" % nb_inference)
-    for i in range(nb_inference):
+    for _ in range(nb_inference):
         task = spec.inference(inputs=[ImageInput(demo_url)], return_task=True, wait_task=False)
         tasks.append(task)
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 1ff137d..1ee7f96 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -283,7 +283,7 @@ def test_batch_wait(self, client):
         timeout = 30
         nb_inference = 20
 
-        for i in range(nb_inference):
+        for _ in range(nb_inference):
             task = spec.inference(inputs=[ImageInput(DEMO_URL)], return_task=True, wait_task=False)
             tasks.append(task)