diff --git a/pkg/crd/testdata/gen/bar.example.com_foos.v1beta1.yaml b/pkg/crd/testdata/gen/bar.example.com_foos.v1beta1.yaml
index 11b2c7c2d..249c400fd 100644
--- a/pkg/crd/testdata/gen/bar.example.com_foos.v1beta1.yaml
+++ b/pkg/crd/testdata/gen/bar.example.com_foos.v1beta1.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: apiextensions.k8s.io/v1beta1
 kind: CustomResourceDefinition
 metadata:
diff --git a/pkg/crd/testdata/gen/bar.example.com_foos.yaml b/pkg/crd/testdata/gen/bar.example.com_foos.yaml
index 7fe830f29..dd70f4785 100644
--- a/pkg/crd/testdata/gen/bar.example.com_foos.yaml
+++ b/pkg/crd/testdata/gen/bar.example.com_foos.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
diff --git a/pkg/genall/genall.go b/pkg/genall/genall.go
index 2cf4ec7e7..221e089f5 100644
--- a/pkg/genall/genall.go
+++ b/pkg/genall/genall.go
@@ -130,12 +130,15 @@ func (g GenerationContext) WriteYAML(itemPath string, objs ...interface{}) error
 	}
 	defer out.Close()
 
-	for _, obj := range objs {
+	for i, obj := range objs {
 		yamlContent, err := yaml.Marshal(obj)
 		if err != nil {
 			return err
 		}
-		n, err := out.Write(append([]byte("\n---\n"), yamlContent...))
+		if i > 0 {
+			yamlContent = append([]byte("\n---\n"), yamlContent...)
+		}
+		n, err := out.Write(yamlContent)
 		if err != nil {
 			return err
 		}
diff --git a/pkg/webhook/parser_integration_test.go b/pkg/webhook/parser_integration_test.go
index e91302707..f2f6c438c 100644
--- a/pkg/webhook/parser_integration_test.go
+++ b/pkg/webhook/parser_integration_test.go
@@ -178,7 +178,7 @@ var _ = Describe("Webhook Generation From Parsing to CustomResourceDefinition",
 })
 
 func unmarshalBothV1(in []byte) (mutating admissionregv1.MutatingWebhookConfiguration, validating admissionregv1.ValidatingWebhookConfiguration) {
-	documents := bytes.Split(in, []byte("\n---\n"))[1:]
+	documents := bytes.Split(in, []byte("\n---\n"))
 	ExpectWithOffset(1, documents).To(HaveLen(2), "expected two documents in file, found %d", len(documents))
 
 	ExpectWithOffset(1, yaml.UnmarshalStrict(documents[0], &mutating)).To(Succeed(), "expected the first document in the file to be a mutating webhook configuration")
diff --git a/pkg/webhook/testdata/invalid-admissionReviewVersionsRequired/manifests.yaml b/pkg/webhook/testdata/invalid-admissionReviewVersionsRequired/manifests.yaml
index 8a579ae92..0961b0942 100644
--- a/pkg/webhook/testdata/invalid-admissionReviewVersionsRequired/manifests.yaml
+++ b/pkg/webhook/testdata/invalid-admissionReviewVersionsRequired/manifests.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata:
diff --git a/pkg/webhook/testdata/invalid-sideEffects/manifests.yaml b/pkg/webhook/testdata/invalid-sideEffects/manifests.yaml
index 8a579ae92..0961b0942 100644
--- a/pkg/webhook/testdata/invalid-sideEffects/manifests.yaml
+++ b/pkg/webhook/testdata/invalid-sideEffects/manifests.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata:
diff --git a/pkg/webhook/testdata/invalid-v1beta1NotSupported/manifests.yaml b/pkg/webhook/testdata/invalid-v1beta1NotSupported/manifests.yaml
index 8a579ae92..0961b0942 100644
--- a/pkg/webhook/testdata/invalid-v1beta1NotSupported/manifests.yaml
+++ b/pkg/webhook/testdata/invalid-v1beta1NotSupported/manifests.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata:
diff --git a/pkg/webhook/testdata/manifests.yaml b/pkg/webhook/testdata/manifests.yaml
index 8a579ae92..0961b0942 100644
--- a/pkg/webhook/testdata/manifests.yaml
+++ b/pkg/webhook/testdata/manifests.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata:
diff --git a/pkg/webhook/testdata/valid/manifests.yaml b/pkg/webhook/testdata/valid/manifests.yaml
index 8a579ae92..0961b0942 100644
--- a/pkg/webhook/testdata/valid/manifests.yaml
+++ b/pkg/webhook/testdata/valid/manifests.yaml
@@ -1,5 +1,3 @@
-
----
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata: