diff --git a/system/disks.ansible.yml b/system/disks.ansible.yml
index 0f3c67f..6d280ae 100644
--- a/system/disks.ansible.yml
+++ b/system/disks.ansible.yml
@@ -23,12 +23,12 @@
     - name: Get ROOT_UUID
       shell: |
         lsblk -o LABEL,UUID | grep ROOT | awk '{print $2}'
-      register: ROOT_UUID
+      register: root_uuid
       run_once: true
     - name: Get ESP_UUID
       shell: |
         lsblk -o LABEL,UUID | grep EFI | awk '{print $2}'
-      register: ESP_UUID
+      register: esp_uuid
       run_once: true
     - name: Deploy fstab
       template:
@@ -38,7 +38,7 @@
         group: root
         mode: '0644'
       vars:
-        ROOT_UUID: '{{ ROOT_UUID.stdout }}'
-        ESP_UUID: '{{ ESP_UUID.stdout }}'
+        ROOT_UUID: '{{ root_uuid.stdout }}'
+        ESP_UUID: '{{ esp_uuid.stdout }}'
         TIMESTAMP: '{{ start_timestamp }}'
         TMPFS_SIZE: '{{ tmpfs_size }}'