diff --git a/rally/neutron/neutron-create-list-network-cc.yml b/rally/neutron/neutron-create-list-network-cc.yml
index 4e241ea04..155641c64 100644
--- a/rally/neutron/neutron-create-list-network-cc.yml
+++ b/rally/neutron/neutron-create-list-network-cc.yml
@@ -5,7 +5,7 @@
   NeutronNetworks.create_and_list_networks:
     -
       args:
-        network_create_args: ""
+        network_create_args: {}
       runner:
         concurrency: {{concurrency}}
         times: {{times}}
diff --git a/rally/neutron/neutron-create-list-port-cc.yml b/rally/neutron/neutron-create-list-port-cc.yml
index 01b521c61..758d6d0a3 100644
--- a/rally/neutron/neutron-create-list-port-cc.yml
+++ b/rally/neutron/neutron-create-list-port-cc.yml
@@ -6,7 +6,7 @@
   NeutronNetworks.create_and_list_ports:
     -
       args:
-        network_create_args: ""
+        network_create_args: {}
         ports_per_network: {{ports_per_network}}
       runner:
         concurrency: {{concurrency}}
diff --git a/rally/neutron/neutron-create-list-router-cc.yml b/rally/neutron/neutron-create-list-router-cc.yml
index 5184aa432..9ec279ba1 100644
--- a/rally/neutron/neutron-create-list-router-cc.yml
+++ b/rally/neutron/neutron-create-list-router-cc.yml
@@ -7,8 +7,8 @@
   NeutronNetworks.create_and_list_routers:
     -
       args:
-        network_create_args: ""
-        subnet_create_args: ""
+        network_create_args: {}
+        subnet_create_args: {}
         subnet_cidr_start: "10.0.0.0/16"
         subnets_per_network: {{subnets_per_network}}
         router_create_args: {{ router_create_args }}
diff --git a/rally/neutron/neutron-create-list-security-group-cc.yml b/rally/neutron/neutron-create-list-security-group-cc.yml
index b2270a359..5ed796b61 100644
--- a/rally/neutron/neutron-create-list-security-group-cc.yml
+++ b/rally/neutron/neutron-create-list-security-group-cc.yml
@@ -5,7 +5,7 @@
   NeutronSecurityGroup.create_and_list_security_groups:
     -
       args:
-        security_group_create_args: ""
+        security_group_create_args: {}
       runner:
         concurrency: {{concurrency}}
         times: {{times}}
diff --git a/rally/neutron/neutron-create-list-subnet-cc.yml b/rally/neutron/neutron-create-list-subnet-cc.yml
index 06d4d98a0..0c243f8a0 100644
--- a/rally/neutron/neutron-create-list-subnet-cc.yml
+++ b/rally/neutron/neutron-create-list-subnet-cc.yml
@@ -6,8 +6,8 @@
   NeutronNetworks.create_and_list_subnets:
     -
       args:
-        network_create_args: ""
-        subnet_create_args: ""
+        network_create_args: {}
+        subnet_create_args: {}
         subnet_cidr_start: "1.1.0.0/30"
         subnets_per_network: {{subnets_per_network}}
       runner: