diff --git a/roles/common/tasks/freebsd.yml b/roles/common/tasks/freebsd.yml
index bf86108..08c04a1 100644
--- a/roles/common/tasks/freebsd.yml
+++ b/roles/common/tasks/freebsd.yml
@@ -10,9 +10,8 @@
       - bash
       - wget
     sysctl:
-      forwarding:
-        - net.inet.ip.forwarding
-        - net.inet6.ip6.forwarding
+      - net.inet.ip.forwarding
+      - net.inet6.ip6.forwarding
   tags:
     - always
 
diff --git a/roles/common/tasks/main.yml b/roles/common/tasks/main.yml
index d8f6ec3..68ca4d4 100644
--- a/roles/common/tasks/main.yml
+++ b/roles/common/tasks/main.yml
@@ -14,14 +14,14 @@
 - name: Install tools
   package: name="{{ item }}" state=present
   with_items:
-    - "{{ tools }}"
+    - "{{ tools|default([]) }}"
   tags:
     - always
 
 - name: Enable packet forwarding for IPv4
   sysctl: name="{{ item }}" value=1
   with_items:
-    - "{{ sysctl.forwarding }}"
+    - "{{ sysctl|default([]) }}"
   tags:
     - always
 
diff --git a/roles/common/tasks/ubuntu.yml b/roles/common/tasks/ubuntu.yml
index e830993..ada74f4 100644
--- a/roles/common/tasks/ubuntu.yml
+++ b/roles/common/tasks/ubuntu.yml
@@ -83,9 +83,8 @@
       - cgroup-tools
       - openssl
     sysctl:
-      forwarding:
-        - net.ipv4.ip_forward
-        - net.ipv4.conf.all.forwarding
-        - net.ipv6.conf.all.forwarding
+      - net.ipv4.ip_forward
+      - net.ipv4.conf.all.forwarding
+      - net.ipv6.conf.all.forwarding
   tags:
     - always