diff --git a/tests/20_traefik_certificates_api.robot b/tests/20_traefik_certificates_api.robot
index 5365dc3..7acffd6 100644
--- a/tests/20_traefik_certificates_api.robot
+++ b/tests/20_traefik_certificates_api.robot
@@ -76,9 +76,9 @@ Upload a custom certificate
     ${response} =    Execute Command    redis-cli --raw HGET module/traefik1/certificate/test.example.com custom
     Should Be Equal As Strings    ${response}    true
     # check if the certificate stored is base64 encoded
-    ${response} =    Execute Command    redis-cli HGET  module/traefik1/certificate/test.example.com cert | base64 -d > /dev/null    return_stdout=False    return_rc=True
+    ${response} =    Execute Command    command=redis-cli HGET module/traefik1/certificate/test.example.com cert | base64 -d    return_stdout=False    return_rc=True
     Should Be Equal As Integers    ${response}    0
-    ${response} =    Execute Command    redis-cli HGET  module/traefik1/certificate/test.example.com key | base64 -d > /dev/null    return_stdout=False    return_rc=True
+    ${response} =    Execute Command    command=redis-cli HGET module/traefik1/certificate/test.example.com key | base64 -d    return_stdout=False    return_rc=True
     Should Be Equal As Integers    ${response}    0
 
 Delete custom certificate