diff --git a/tests/func/test_repro.py b/tests/func/test_repro.py
index d01dfd656..700286f8a 100644
--- a/tests/func/test_repro.py
+++ b/tests/func/test_repro.py
@@ -957,7 +957,7 @@ class TestReproExternalS3(TestReproExternalBase):
         return TEST_AWS_REPO_BUCKET
 
     def cmd(self, i, o):
-        return "aws s3 cp {} {}".format(i, o)
+        return "where aws && aws help && aws s3 cp {} {}".format(i, o)
 
     def write(self, bucket, key, body):
         s3 = boto3.resource("s3")