diff --git a/cloud/blockstore/tools/csi_driver/internal/driver/node.go b/cloud/blockstore/tools/csi_driver/internal/driver/node.go
index 237e0fe5a0..7805e82a5b 100644
--- a/cloud/blockstore/tools/csi_driver/internal/driver/node.go
+++ b/cloud/blockstore/tools/csi_driver/internal/driver/node.go
@@ -154,7 +154,20 @@ func (s *nodeService) NodeStageVolume(
 			"VolumeCapability is missing in NodeStageVolumeRequest")
 	}
 
+	accessMode := req.VolumeCapability.AccessMode
+	if accessMode == nil {
+		return nil, s.statusError(
+			codes.InvalidArgument,
+			"AccessMode is missing in NodePublishVolumeRequest")
+	}
+
 	nfsBackend := (req.VolumeContext[backendVolumeContextKey] == "nfs")
+	if !nfsBackend && accessMode.GetMode() ==
+		csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER {
+		return nil, s.statusError(
+			codes.InvalidArgument,
+			"ReadWriteMany access mode is supported only with nfs backend")
+	}
 
 	var err error
 	switch req.VolumeCapability.GetAccessType().(type) {
diff --git a/cloud/blockstore/tools/csi_driver/internal/driver/node_test.go b/cloud/blockstore/tools/csi_driver/internal/driver/node_test.go
index 1e0ffbc2a1..9a88cef347 100644
--- a/cloud/blockstore/tools/csi_driver/internal/driver/node_test.go
+++ b/cloud/blockstore/tools/csi_driver/internal/driver/node_test.go
@@ -839,9 +839,13 @@ func TestPublishDeviceWithReadWriteManyModeIsNotSupportedWithNBS(t *testing.T) {
 	_, err = nodeService.NodeStageVolume(ctx, &csi.NodeStageVolumeRequest{
 		VolumeId:          diskID,
 		StagingTargetPath: "testStagingTargetPath",
-		VolumeCapability:  &csi.VolumeCapability{},
+		VolumeCapability: &csi.VolumeCapability{
+			AccessType: &csi.VolumeCapability_Block{
+				Block: &csi.VolumeCapability_BlockVolume{},
+			},
+		},
 	})
-	require.NoError(t, err)
+	require.Error(t, err)
 
 	// NodePublishVolume without access mode should fail
 	_, err = nodeService.NodePublishVolume(ctx, &csi.NodePublishVolumeRequest{