diff --git a/modules/cudaoptflow/CMakeLists.txt b/modules/cudaoptflow/CMakeLists.txt
index b7a2109fbb..f2d3e3da0b 100644
--- a/modules/cudaoptflow/CMakeLists.txt
+++ b/modules/cudaoptflow/CMakeLists.txt
@@ -6,4 +6,4 @@ set(the_description "CUDA-accelerated Optical Flow")
 
 ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4127 /wd4324 /wd4512 -Wundef -Wmissing-declarations)
 
-ocv_define_module(cudaoptflow opencv_video opencv_legacy opencv_cudaarithm opencv_cudawarping opencv_cudaimgproc OPTIONAL opencv_cudalegacy)
+ocv_define_module(cudaoptflow opencv_video opencv_cudaarithm opencv_cudawarping opencv_cudaimgproc OPTIONAL opencv_cudalegacy)
diff --git a/modules/cudaoptflow/perf/perf_optflow.cpp b/modules/cudaoptflow/perf/perf_optflow.cpp
index 6c312ad0be..71ab895082 100644
--- a/modules/cudaoptflow/perf/perf_optflow.cpp
+++ b/modules/cudaoptflow/perf/perf_optflow.cpp
@@ -41,7 +41,6 @@
 //M*/
 
 #include "perf_precomp.hpp"
-#include "opencv2/legacy.hpp"
 
 using namespace std;
 using namespace testing;
@@ -389,24 +388,6 @@ PERF_TEST_P(ImagePair, OpticalFlowDual_TVL1,
 //////////////////////////////////////////////////////
 // OpticalFlowBM
 
-void calcOpticalFlowBM(const cv::Mat& prev, const cv::Mat& curr,
-                       cv::Size bSize, cv::Size shiftSize, cv::Size maxRange, int usePrevious,
-                       cv::Mat& velx, cv::Mat& vely)
-{
-    cv::Size sz((curr.cols - bSize.width + shiftSize.width)/shiftSize.width, (curr.rows - bSize.height + shiftSize.height)/shiftSize.height);
-
-    velx.create(sz, CV_32FC1);
-    vely.create(sz, CV_32FC1);
-
-    CvMat cvprev = prev;
-    CvMat cvcurr = curr;
-
-    CvMat cvvelx = velx;
-    CvMat cvvely = vely;
-
-    cvCalcOpticalFlowBM(&cvprev, &cvcurr, bSize, shiftSize, maxRange, usePrevious, &cvvelx, &cvvely);
-}
-
 PERF_TEST_P(ImagePair, OpticalFlowBM,
             Values<pair_string>(make_pair("gpu/opticalflow/frame0.png", "gpu/opticalflow/frame1.png")))
 {
@@ -435,12 +416,7 @@ PERF_TEST_P(ImagePair, OpticalFlowBM,
     }
     else
     {
-        cv::Mat u, v;
-
-        TEST_CYCLE() calcOpticalFlowBM(frame0, frame1, block_size, shift_size, max_range, false, u, v);
-
-        CPU_SANITY_CHECK(u);
-        CPU_SANITY_CHECK(v);
+        FAIL_NO_CPU();
     }
 }
 
diff --git a/modules/cudaoptflow/test/test_optflow.cpp b/modules/cudaoptflow/test/test_optflow.cpp
index 110fed0339..1de40510dd 100644
--- a/modules/cudaoptflow/test/test_optflow.cpp
+++ b/modules/cudaoptflow/test/test_optflow.cpp
@@ -41,7 +41,6 @@
 //M*/
 
 #include "test_precomp.hpp"
-#include "opencv2/legacy.hpp"
 
 #ifdef HAVE_CUDA
 
@@ -370,65 +369,6 @@ INSTANTIATE_TEST_CASE_P(CUDA_OptFlow, OpticalFlowDual_TVL1, testing::Combine(
     ALL_DEVICES,
     WHOLE_SUBMAT));
 
-//////////////////////////////////////////////////////
-// OpticalFlowBM
-
-namespace
-{
-    void calcOpticalFlowBM(const cv::Mat& prev, const cv::Mat& curr,
-                           cv::Size bSize, cv::Size shiftSize, cv::Size maxRange, int usePrevious,
-                           cv::Mat& velx, cv::Mat& vely)
-    {
-        cv::Size sz((curr.cols - bSize.width + shiftSize.width)/shiftSize.width, (curr.rows - bSize.height + shiftSize.height)/shiftSize.height);
-
-        velx.create(sz, CV_32FC1);
-        vely.create(sz, CV_32FC1);
-
-        CvMat cvprev = prev;
-        CvMat cvcurr = curr;
-
-        CvMat cvvelx = velx;
-        CvMat cvvely = vely;
-
-        cvCalcOpticalFlowBM(&cvprev, &cvcurr, bSize, shiftSize, maxRange, usePrevious, &cvvelx, &cvvely);
-    }
-}
-
-struct OpticalFlowBM : testing::TestWithParam<cv::cuda::DeviceInfo>
-{
-};
-
-CUDA_TEST_P(OpticalFlowBM, Accuracy)
-{
-    cv::cuda::DeviceInfo devInfo = GetParam();
-    cv::cuda::setDevice(devInfo.deviceID());
-
-    cv::Mat frame0 = readImage("opticalflow/rubberwhale1.png", cv::IMREAD_GRAYSCALE);
-    ASSERT_FALSE(frame0.empty());
-    cv::resize(frame0, frame0, cv::Size(), 0.5, 0.5);
-
-    cv::Mat frame1 = readImage("opticalflow/rubberwhale2.png", cv::IMREAD_GRAYSCALE);
-    ASSERT_FALSE(frame1.empty());
-    cv::resize(frame1, frame1, cv::Size(), 0.5, 0.5);
-
-    cv::Size block_size(8, 8);
-    cv::Size shift_size(1, 1);
-    cv::Size max_range(8, 8);
-
-    cv::cuda::GpuMat d_velx, d_vely, buf;
-    cv::cuda::calcOpticalFlowBM(loadMat(frame0), loadMat(frame1),
-                               block_size, shift_size, max_range, false,
-                               d_velx, d_vely, buf);
-
-    cv::Mat velx, vely;
-    calcOpticalFlowBM(frame0, frame1, block_size, shift_size, max_range, false, velx, vely);
-
-    EXPECT_MAT_NEAR(velx, d_velx, 0);
-    EXPECT_MAT_NEAR(vely, d_vely, 0);
-}
-
-INSTANTIATE_TEST_CASE_P(CUDA_OptFlow, OpticalFlowBM, ALL_DEVICES);
-
 //////////////////////////////////////////////////////
 // FastOpticalFlowBM