diff --git a/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go b/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
index 246623ea..9a9bd272 100644
--- a/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
+++ b/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
@@ -188,7 +188,6 @@ func TestAccInstanceReApply(t *testing.T) {
 		PreCheck: func() {
 			testAccPreCheck(t)
 			t.Logf("  ... working on instance %s", exData.TfName)
-			testInstances = append(testInstances, exData.TfName)
 		},
 		ProtoV6ProviderFactories: testutils.TestAccProtoV6ProviderFactories,
 		Steps: []resource.TestStep{
@@ -274,7 +273,6 @@ func TestAccInstanceNoEncryption(t *testing.T) {
 		PreCheck: func() {
 			testAccPreCheck(t)
 			t.Logf("  ... working on instance %s", data.TfName)
-			testInstances = append(testInstances, data.TfName)
 		},
 		ProtoV6ProviderFactories: testutils.TestAccProtoV6ProviderFactories,
 		Steps: []resource.TestStep{
@@ -377,7 +375,6 @@ func TestAccInstanceEncryption(t *testing.T) {
 		PreCheck: func() {
 			testAccPreCheck(t)
 			t.Logf("  ... working on instance %s", data.TfName)
-			testInstances = append(testInstances, data.TfName)
 		},
 		ProtoV6ProviderFactories: testutils.TestAccProtoV6ProviderFactories,
 		Steps: []resource.TestStep{