diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 85b825d..27ac70f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -17,10 +17,10 @@ concurrency:
 jobs:
   CI:
     env:
-      TF_VAR_tenant_id: ${{secrets.TENANT_ID }}
-      TF_VAR_subscription_id: ${{secrets.SUBSCRIPTION_ID }}
-      TF_VAR_client_id: ${{secrets.CLIENT_ID }}
-      TF_VAR_client_secret: ${{secrets.CLIENT_SECRET }}
+      ARM_TENANT_ID: ${{secrets.TENANT_ID }}
+      ARM_SUBSCRIPTION_ID: ${{secrets.SUBSCRIPTION_ID }}
+      ARM_CLIENT_ID: ${{secrets.CLIENT_ID }}
+      ARM_CLIENT_SECRET: ${{secrets.CLIENT_SECRET }}
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
diff --git a/tests/smoke_test.tftest.hcl b/tests/smoke_test.tftest.hcl
index 077a043..4e223c4 100644
--- a/tests/smoke_test.tftest.hcl
+++ b/tests/smoke_test.tftest.hcl
@@ -1,9 +1,5 @@
 provider "azurerm" {
   features {}
-  tenant_id       = var.tenant_id
-  client_id       = var.client_id
-  client_secret   = var.client_secret
-  subscription_id = var.subscription_id
 }
 
 run "setup" {
@@ -16,7 +12,7 @@ run "setup" {
   }
 }
 
-run "smoke_test_plan" {
+run "smoke_test_plan__default_values" {
   command = plan
 
   variables {