diff --git a/playbooks/devstack/compute/run-e2etests.yaml b/playbooks/devstack/compute/run-e2etests.yaml
index df669564..5087011e 100644
--- a/playbooks/devstack/compute/run-e2etests.yaml
+++ b/playbooks/devstack/compute/run-e2etests.yaml
@@ -1,7 +1,7 @@
 ---
 - hosts: controller
   vars:
-    - devstack_base_dir: /opt/stack
+    devstack_base_dir: /opt/stack
   tasks:
     - name: Run e2e tests
       shell:
diff --git a/playbooks/devstack/network/run-e2etests.yaml b/playbooks/devstack/network/run-e2etests.yaml
index 7e740fea..0a3c7c6f 100644
--- a/playbooks/devstack/network/run-e2etests.yaml
+++ b/playbooks/devstack/network/run-e2etests.yaml
@@ -1,7 +1,7 @@
 ---
 - hosts: controller
   vars:
-    - devstack_base_dir: /opt/stack
+    devstack_base_dir: /opt/stack
   tasks:
     - name: Run e2e tests
       shell:
diff --git a/playbooks/devstack/other/run-e2etests.yaml b/playbooks/devstack/other/run-e2etests.yaml
index e2ade530..f41ab9ea 100644
--- a/playbooks/devstack/other/run-e2etests.yaml
+++ b/playbooks/devstack/other/run-e2etests.yaml
@@ -1,7 +1,7 @@
 ---
 - hosts: controller
   vars:
-    - devstack_base_dir: /opt/stack
+    devstack_base_dir: /opt/stack
   tasks:
     - name: Run e2e tests
       shell:
diff --git a/playbooks/devstack/pre.yaml b/playbooks/devstack/pre.yaml
index f83cf87b..e41a47b6 100644
--- a/playbooks/devstack/pre.yaml
+++ b/playbooks/devstack/pre.yaml
@@ -5,7 +5,7 @@
 
 - hosts: controller
   vars:
-    - devstack_base_dir: /opt/stack
+    devstack_base_dir: /opt/stack
   tasks:
     - name: Copy skyline-apiserver repos into devstack working directory
       command: rsync -a {{ item }} {{ devstack_base_dir }}
diff --git a/playbooks/devstack/storage/run-e2etests.yaml b/playbooks/devstack/storage/run-e2etests.yaml
index 9a98ef69..d6792210 100644
--- a/playbooks/devstack/storage/run-e2etests.yaml
+++ b/playbooks/devstack/storage/run-e2etests.yaml
@@ -1,7 +1,7 @@
 ---
 - hosts: controller
   vars:
-    - devstack_base_dir: /opt/stack
+    devstack_base_dir: /opt/stack
   tasks:
     - name: Run e2e tests
       shell: