diff --git a/pkg/apis/extensions/v1beta1/conversion.go b/pkg/apis/extensions/v1beta1/conversion.go
index 4a85d23d39c..5ea52856056 100644
--- a/pkg/apis/extensions/v1beta1/conversion.go
+++ b/pkg/apis/extensions/v1beta1/conversion.go
@@ -189,7 +189,7 @@ func Convert_networking_IngressBackend_To_v1beta1_IngressBackend(in *networking.
 
 func Convert_v1beta1_IngressSpec_To_networking_IngressSpec(in *extensionsv1beta1.IngressSpec, out *networking.IngressSpec, s conversion.Scope) error {
 	if err := autoConvert_v1beta1_IngressSpec_To_networking_IngressSpec(in, out, s); err != nil {
-		return nil
+		return err
 	}
 	if in.Backend != nil {
 		out.DefaultBackend = &networking.IngressBackend{}
@@ -202,7 +202,7 @@ func Convert_v1beta1_IngressSpec_To_networking_IngressSpec(in *extensionsv1beta1
 
 func Convert_networking_IngressSpec_To_v1beta1_IngressSpec(in *networking.IngressSpec, out *extensionsv1beta1.IngressSpec, s conversion.Scope) error {
 	if err := autoConvert_networking_IngressSpec_To_v1beta1_IngressSpec(in, out, s); err != nil {
-		return nil
+		return err
 	}
 	if in.DefaultBackend != nil {
 		out.Backend = &extensionsv1beta1.IngressBackend{}
diff --git a/pkg/apis/networking/v1beta1/conversion.go b/pkg/apis/networking/v1beta1/conversion.go
index 42df29a408d..5f4553cfe05 100644
--- a/pkg/apis/networking/v1beta1/conversion.go
+++ b/pkg/apis/networking/v1beta1/conversion.go
@@ -52,7 +52,7 @@ func Convert_networking_IngressBackend_To_v1beta1_IngressBackend(in *networking.
 }
 func Convert_v1beta1_IngressSpec_To_networking_IngressSpec(in *v1beta1.IngressSpec, out *networking.IngressSpec, s conversion.Scope) error {
 	if err := autoConvert_v1beta1_IngressSpec_To_networking_IngressSpec(in, out, s); err != nil {
-		return nil
+		return err
 	}
 	if in.Backend != nil {
 		out.DefaultBackend = &networking.IngressBackend{}
@@ -65,7 +65,7 @@ func Convert_v1beta1_IngressSpec_To_networking_IngressSpec(in *v1beta1.IngressSp
 
 func Convert_networking_IngressSpec_To_v1beta1_IngressSpec(in *networking.IngressSpec, out *v1beta1.IngressSpec, s conversion.Scope) error {
 	if err := autoConvert_networking_IngressSpec_To_v1beta1_IngressSpec(in, out, s); err != nil {
-		return nil
+		return err
 	}
 	if in.DefaultBackend != nil {
 		out.Backend = &v1beta1.IngressBackend{}
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1/conversion.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1/conversion.go
index c056dd91ffa..59665505598 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1/conversion.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1/conversion.go
@@ -103,7 +103,7 @@ func Convert_apiextensions_CustomResourceDefinitionSpec_To_v1_CustomResourceDefi
 
 func Convert_v1_CustomResourceDefinitionSpec_To_apiextensions_CustomResourceDefinitionSpec(in *CustomResourceDefinitionSpec, out *apiextensions.CustomResourceDefinitionSpec, s conversion.Scope) error {
 	if err := autoConvert_v1_CustomResourceDefinitionSpec_To_apiextensions_CustomResourceDefinitionSpec(in, out, s); err != nil {
-		return nil
+		return err
 	}
 
 	if len(out.Versions) == 0 {
diff --git a/staging/src/k8s.io/client-go/tools/clientcmd/api/v1/conversion.go b/staging/src/k8s.io/client-go/tools/clientcmd/api/v1/conversion.go
index c38ebc07604..6eee281bc66 100644
--- a/staging/src/k8s.io/client-go/tools/clientcmd/api/v1/conversion.go
+++ b/staging/src/k8s.io/client-go/tools/clientcmd/api/v1/conversion.go
@@ -165,7 +165,7 @@ func Convert_Map_string_To_runtime_Object_To_Slice_v1_NamedExtension(in *map[str
 		newExtension := (*in)[key]
 		oldExtension := runtime.RawExtension{}
 		if err := runtime.Convert_runtime_Object_To_runtime_RawExtension(&newExtension, &oldExtension, s); err != nil {
-			return nil
+			return err
 		}
 		namedExtension := NamedExtension{key, oldExtension}
 		*out = append(*out, namedExtension)