diff --git a/pkg/storage/fs/nextcloud/nextcloud.go b/pkg/storage/fs/nextcloud/nextcloud.go
index 4910ad5193..772026dda7 100644
--- a/pkg/storage/fs/nextcloud/nextcloud.go
+++ b/pkg/storage/fs/nextcloud/nextcloud.go
@@ -341,7 +341,17 @@ func (nc *StorageDriver) ListFolder(ctx context.Context, ref *provider.Reference
 
 // InitiateUpload as defined in the storage.FS interface
 func (nc *StorageDriver) InitiateUpload(ctx context.Context, ref *provider.Reference, uploadLength int64, metadata map[string]string) (map[string]string, error) {
-	bodyStr, _ := json.Marshal(ref)
+	type paramsObj struct {
+		Ref provider.Reference      `json:"ref"`
+		UploadLength int64 `json:"uploadLength"`
+		Metadata map[string]string `json:"metadata"`
+	}
+	bodyObj := &paramsObj{
+		Ref: *ref,
+		UploadLength: uploadLength,
+		Metadata: metadata,
+	}
+	bodyStr, _ := json.Marshal(bodyObj)
 	log := appctx.GetLogger(ctx)
 	log.Info().Msgf("InitiateUpload %s", bodyStr)
 
diff --git a/pkg/storage/fs/nextcloud/nextcloud_server_mock.go b/pkg/storage/fs/nextcloud/nextcloud_server_mock.go
index 652aeabea4..f86a9be7a1 100644
--- a/pkg/storage/fs/nextcloud/nextcloud_server_mock.go
+++ b/pkg/storage/fs/nextcloud/nextcloud_server_mock.go
@@ -140,6 +140,7 @@ var responses = map[string]Response{
 	`POST /apps/sciencemesh/~tester/api/Move {"from":{"resource_id":{"storage_id":"storage-id-1","opaque_id":"opaque-id-1"},"path":"/some/old/path"},"to":{"resource_id":{"storage_id":"storage-id-2","opaque_id":"opaque-id-2"},"path":"/some/new/path"}}`: {200, ``, serverStateEmpty},	
 	`POST /apps/sciencemesh/~tester/api/GetMD {"ref":{"resource_id":{"storage_id":"storage-id","opaque_id":"opaque-id"},"path":"/some/path"},"mdKeys":["val1","val2","val3"]}`: {200, `{ "size": 1, "path":"/some/path", "metadata": { "foo": "bar" }, "etag": "in-json-etag", "mimetype": "in-json-mimetype" }`, serverStateEmpty},	
 	`POST /apps/sciencemesh/~tester/api/ListFolder {"ref":{"resource_id":{"storage_id":"storage-id","opaque_id":"opaque-id"},"path":"/some/path"},"mdKeys":["val1","val2","val3"]}`: {200, `[{ "size": 1, "path":"/some/path", "metadata": { "foo": "bar" }, "etag": "in-json-etag", "mimetype": "in-json-mimetype" }]`, serverStateEmpty},	
+  `POST /apps/sciencemesh/~tester/api/InitiateUpload {"ref":{"resource_id":{"storage_id":"storage-id","opaque_id":"opaque-id"},"path":"/some/path"},"uploadLength":12345,"metadata":{"key1":"val1","key2":"val2","key3":"val3"}}`: {200, `{ "not":"sure", "what": "should be", "returned": "here" }`, serverStateEmpty},
 }
 
 // GetNextcloudServerMock returns a handler that pretends to be a remote Nextcloud server
diff --git a/pkg/storage/fs/nextcloud/nextcloud_test.go b/pkg/storage/fs/nextcloud/nextcloud_test.go
index bd08a3c400..0d4d7d8863 100644
--- a/pkg/storage/fs/nextcloud/nextcloud_test.go
+++ b/pkg/storage/fs/nextcloud/nextcloud_test.go
@@ -284,6 +284,42 @@ var _ = Describe("Nextcloud", func() {
 	})
 
 	// InitiateUpload(ctx context.Context, ref *provider.Reference, uploadLength int64, metadata map[string]string) (map[string]string, error)
+	Describe("InitiateUpload", func() {
+		It("calls the ListFolder endpoint", func() {
+			nc, _ := nextcloud.NewStorageDriver(&nextcloud.StorageDriverConfig{
+				EndPoint: "http://mock.com/apps/sciencemesh/",
+				MockHTTP: true,
+			})
+			called := make([]string, 0)
+			h := nextcloud.GetNextcloudServerMock(&called)
+			mock, teardown := nextcloud.TestingHTTPClient(h)
+			defer teardown()
+			nc.SetHTTPClient(mock)
+			// https://github.com/cs3org/go-cs3apis/blob/970eec3/cs3/storage/provider/v1beta1/resources.pb.go#L550-L561
+			ref := &provider.Reference{
+				ResourceId: &provider.ResourceId{
+          StorageId: "storage-id",
+					OpaqueId: "opaque-id",
+				},
+				Path: "/some/path",
+			}
+			uploadLength := int64(12345)
+			metadata := map[string]string{
+				"key1": "val1",
+				"key2": "val2",
+				"key3": "val3",
+			}
+			results, err := nc.InitiateUpload(ctx, ref, uploadLength, metadata)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(results).To(Equal(map[string]string{
+				"not": "sure",
+				"what": "should be",
+				"returned": "here",
+			}))
+			Expect(called[0]).To(Equal("POST /apps/sciencemesh/~tester/api/InitiateUpload {\"ref\":{\"resource_id\":{\"storage_id\":\"storage-id\",\"opaque_id\":\"opaque-id\"},\"path\":\"/some/path\"},\"uploadLength\":12345,\"metadata\":{\"key1\":\"val1\",\"key2\":\"val2\",\"key3\":\"val3\"}}"))
+		})
+	})
+
 	// Upload(ctx context.Context, ref *provider.Reference, r io.ReadCloser) error
 	// Download(ctx context.Context, ref *provider.Reference) (io.ReadCloser, error)
 	// ListRevisions(ctx context.Context, ref *provider.Reference) ([]*provider.FileVersion, error)