diff --git a/infrastructure/roles/k3s/tasks/main.yml b/infrastructure/roles/k3s/tasks/main.yml
index 5ee0379..3a2da29 100644
--- a/infrastructure/roles/k3s/tasks/main.yml
+++ b/infrastructure/roles/k3s/tasks/main.yml
@@ -87,7 +87,7 @@
     curl -sfL https://get.k3s.io | sh -
   environment:
     INSTALL_K3S_EXEC: "{{ k3s_role }}"
-    INSTALL_K3S_VERSION: "{{ k3s_version if (k3s_version | length > 0) else omit }}"
+    {{ (k3s_version | length > 0) | ternary({'INSTALL_K3S_VERSION': k3s_version}, {}) }}
   args:
     creates: /usr/local/bin/k3s
   when: k3s_needs_install