diff --git a/controllers/provider-alicloud/test/tm/generator.go b/controllers/provider-alicloud/test/tm/generator.go
index 62f5a469b..af4708300 100644
--- a/controllers/provider-alicloud/test/tm/generator.go
+++ b/controllers/provider-alicloud/test/tm/generator.go
@@ -59,8 +59,9 @@ func main() {
 			},
 			Zones: []v1alpha1.Zone{
 				{
-					Name:    *zone,
-					Workers: *networkWorkerCidr,
+					Name: *zone,
+					// TODO: change this to `Workers` once garden.sapcloud.io API group is removed
+					Worker: *networkWorkerCidr,
 				},
 			},
 		},
diff --git a/controllers/provider-gcp/test/tm/generator.go b/controllers/provider-gcp/test/tm/generator.go
index 948a848e8..a9911a742 100644
--- a/controllers/provider-gcp/test/tm/generator.go
+++ b/controllers/provider-gcp/test/tm/generator.go
@@ -53,7 +53,8 @@ func main() {
 			Kind:       reflect.TypeOf(v1alpha1.InfrastructureConfig{}).Name(),
 		},
 		Networks: v1alpha1.NetworkConfig{
-			Workers: *networkWorkerCidr,
+			// TODO: change this to `Workers` once garden.sapcloud.io API group is removed
+			Worker: *networkWorkerCidr,
 		},
 	}
 
diff --git a/controllers/provider-openstack/test/tm/generator.go b/controllers/provider-openstack/test/tm/generator.go
index 987dfbcb5..6654fad95 100644
--- a/controllers/provider-openstack/test/tm/generator.go
+++ b/controllers/provider-openstack/test/tm/generator.go
@@ -56,7 +56,8 @@ func main() {
 		},
 		FloatingPoolName: *floatingPoolName,
 		Networks: v1alpha1.Networks{
-			Workers: *networkWorkerCidr,
+			// TODO: change this to `Workers` once garden.sapcloud.io API group is removed
+			Worker: *networkWorkerCidr,
 		},
 	}