diff --git a/builder/proxmox/common/step_finalize_template_config.go b/builder/proxmox/common/step_finalize_template_config.go
index 34ee620b..f49977df 100644
--- a/builder/proxmox/common/step_finalize_template_config.go
+++ b/builder/proxmox/common/step_finalize_template_config.go
@@ -55,7 +55,7 @@ func (s *stepFinalizeTemplateConfig) Run(ctx context.Context, state multistep.St
 			}
 		}
 		if cloudInitStoragePool != "" {
-			ideControllers := []string{"ide3", "ide2", "ide1", "ide0"}
+			ideControllers := []string{"ide0", "ide1", "ide2", "ide3"}
 			cloudInitAttached := false
 			// find a free ide controller
 			for _, controller := range ideControllers {
diff --git a/builder/proxmox/common/step_finalize_template_config_test.go b/builder/proxmox/common/step_finalize_template_config_test.go
index ae259f41..8d26536a 100644
--- a/builder/proxmox/common/step_finalize_template_config_test.go
+++ b/builder/proxmox/common/step_finalize_template_config_test.go
@@ -85,7 +85,7 @@ func TestTemplateFinalize(t *testing.T) {
 			expectedVMConfig: map[string]interface{}{
 				"name":        "my-template",
 				"description": "some-description",
-				"ide3":        "ceph01:cloudinit",
+				"ide0":        "ceph01:cloudinit",
 			},
 			expectedAction: multistep.ActionContinue,
 		},