diff --git a/pkg/apis/externaldns/types.go b/pkg/apis/externaldns/types.go
index f0637abe8..3e67a8bf9 100644
--- a/pkg/apis/externaldns/types.go
+++ b/pkg/apis/externaldns/types.go
@@ -162,7 +162,7 @@ var defaultConfig = &Config{
 	ExoscaleEndpoint:         "https://api.exoscale.ch/dns",
 	ExoscaleAPIKey:           "",
 	ExoscaleAPISecret:        "",
-	CRDSourceAPIVersion:      "externaldns.k8s.io/v1alpha",
+	CRDSourceAPIVersion:      "externaldns.k8s.io/v1alpha1",
 	CRDSourceKind:            "DNSEndpoint",
 	ServiceTypeFilter:        []string{},
 	RFC2136Host:              "",
diff --git a/pkg/apis/externaldns/types_test.go b/pkg/apis/externaldns/types_test.go
index e3094402b..87740640f 100644
--- a/pkg/apis/externaldns/types_test.go
+++ b/pkg/apis/externaldns/types_test.go
@@ -75,7 +75,7 @@ var (
 		ExoscaleEndpoint:        "https://api.exoscale.ch/dns",
 		ExoscaleAPIKey:          "",
 		ExoscaleAPISecret:       "",
-		CRDSourceAPIVersion:     "externaldns.k8s.io/v1alpha",
+		CRDSourceAPIVersion:     "externaldns.k8s.io/v1alpha1",
 		CRDSourceKind:           "DNSEndpoint",
 	}
 
diff --git a/source/crd.go b/source/crd.go
index 116166741..79b308ad4 100644
--- a/source/crd.go
+++ b/source/crd.go
@@ -69,7 +69,7 @@ func NewCRDClientForAPIVersionKind(client kubernetes.Interface, kubeConfig, kube
 	}
 	apiResourceList, err := client.Discovery().ServerResourcesForGroupVersion(groupVersion.String())
 	if err != nil {
-		return nil, nil, fmt.Errorf("error listing resources in GroupVersion %q", groupVersion.String())
+		return nil, nil, fmt.Errorf("error listing resources in GroupVersion %q: %s", groupVersion.String(), err)
 	}
 
 	var crdAPIResource *metav1.APIResource