diff --git a/src/common/utils/registry/repository.go b/src/common/utils/registry/repository.go
index b3cbc7473..adef72860 100644
--- a/src/common/utils/registry/repository.go
+++ b/src/common/utils/registry/repository.go
@@ -377,7 +377,11 @@ func (r *Repository) initiateBlobUpload(name string) (location, uploadUUID strin
 }
 
 func (r *Repository) monolithicBlobUpload(location, digest string, size int64, data io.Reader) error {
-	req, err := http.NewRequest("PUT", buildMonolithicBlobUploadURL(location, digest), data)
+	url, err := buildMonolithicBlobUploadURL(r.Endpoint.String(), location, digest)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequest("PUT", url, data)
 	if err != nil {
 		return err
 	}
@@ -462,7 +466,16 @@ func buildInitiateBlobUploadURL(endpoint, repoName string) string {
 	return fmt.Sprintf("%s/v2/%s/blobs/uploads/", endpoint, repoName)
 }
 
-func buildMonolithicBlobUploadURL(location, digest string) string {
+func buildMonolithicBlobUploadURL(endpoint, location, digest string) (string, error) {
+	relative, err := isRelativeURL(location)
+	if err != nil {
+		return "", err
+	}
+	// when the registry enables "relativeurls", the location returned
+	// has no scheme and host part
+	if relative {
+		location = endpoint + location
+	}
 	query := ""
 	if strings.ContainsRune(location, '?') {
 		query = "&"
@@ -470,5 +483,13 @@ func buildMonolithicBlobUploadURL(location, digest string) string {
 		query = "?"
 	}
 	query += fmt.Sprintf("digest=%s", digest)
-	return fmt.Sprintf("%s%s", location, query)
+	return fmt.Sprintf("%s%s", location, query), nil
+}
+
+func isRelativeURL(endpoint string) (bool, error) {
+	u, err := url.Parse(endpoint)
+	if err != nil {
+		return false, err
+	}
+	return !u.IsAbs(), nil
 }
diff --git a/src/common/utils/registry/repository_test.go b/src/common/utils/registry/repository_test.go
index 753504441..8bdbe60ff 100644
--- a/src/common/utils/registry/repository_test.go
+++ b/src/common/utils/registry/repository_test.go
@@ -24,6 +24,10 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+
+	"github.com/stretchr/testify/require"
+
 	"github.com/docker/distribution/manifest/schema2"
 	registry_error "github.com/vmware/harbor/src/common/utils/error"
 	"github.com/vmware/harbor/src/common/utils/test"
@@ -399,3 +403,22 @@ func TestParseError(t *testing.T) {
 func newRepository(endpoint string) (*Repository, error) {
 	return NewRepository(repository, endpoint, &http.Client{})
 }
+
+func TestBuildMonolithicBlobUploadURL(t *testing.T) {
+	endpoint := "http://192.169.0.1"
+	digest := "sha256:ef15416724f6e2d5d5b422dc5105add931c1f2a45959cd4993e75e47957b3b55"
+
+	// absolute URL
+	location := "http://192.169.0.1/v2/library/golang/blobs/uploads/c9f84fd7-0198-43e3-80a7-dd13771cd7f0?_state=GabyCujPu0dpxiY8yYZTq"
+	expected := location + "&digest=" + digest
+	url, err := buildMonolithicBlobUploadURL(endpoint, location, digest)
+	require.Nil(t, err)
+	assert.Equal(t, expected, url)
+
+	// relative URL
+	location = "/v2/library/golang/blobs/uploads/c9f84fd7-0198-43e3-80a7-dd13771cd7f0?_state=GabyCujPu0dpxiY8yYZTq"
+	expected = endpoint + location + "&digest=" + digest
+	url, err = buildMonolithicBlobUploadURL(endpoint, location, digest)
+	require.Nil(t, err)
+	assert.Equal(t, expected, url)
+}