diff --git a/modules/core/src/stat.cpp b/modules/core/src/stat.cpp
index eac823995..e067201a5 100644
--- a/modules/core/src/stat.cpp
+++ b/modules/core/src/stat.cpp
@@ -1238,8 +1238,8 @@ static bool ocl_minMaxIdx( InputArray _src, double* minVal, double* maxVal, int*
         wgs2_aligned <<= 1;
     wgs2_aligned >>= 1;
 
-    String opts = format("-D DEPTH_%d -D OP_MIN_MAX_LOC%s -D WGS=%d -D WGS2_ALIGNED=%d %s",
-        depth, _mask.empty() ? "" : "_MASK", (int)wgs, wgs2_aligned, doubleSupport ? "-D DOUBLE_SUPPORT" : "");
+    String opts = format("-D DEPTH_%d -D OP_MIN_MAX_LOC%s -D WGS=%d -D WGS2_ALIGNED=%d%s",
+        depth, _mask.empty() ? "" : "_MASK", (int)wgs, wgs2_aligned, doubleSupport ? " -D DOUBLE_SUPPORT" : "");
 
     ocl::Kernel k("reduce", ocl::core::reduce_oclsrc, opts);
     if (k.empty())
@@ -1248,13 +1248,13 @@ static bool ocl_minMaxIdx( InputArray _src, double* minVal, double* maxVal, int*
     UMat src = _src.getUMat(), minval(1, groupnum, src.type()),
         maxval(1, groupnum, src.type()), minloc( 1, groupnum, CV_32SC1),
         maxloc( 1, groupnum, CV_32SC1), mask;
-    if(!_mask.empty())
+    if (!_mask.empty())
         mask = _mask.getUMat();
 
-    if(src.channels()>1)
+    if (src.channels() > 1)
         src = src.reshape(1);
 
-    if(mask.empty())
+    if (mask.empty())
         k.args(ocl::KernelArg::ReadOnlyNoSize(src), src.cols, (int)src.total(),
             groupnum, ocl::KernelArg::PtrWriteOnly(minval), ocl::KernelArg::PtrWriteOnly(maxval),
             ocl::KernelArg::PtrWriteOnly(minloc), ocl::KernelArg::PtrWriteOnly(maxloc));
diff --git a/modules/imgproc/src/featureselect.cpp b/modules/imgproc/src/featureselect.cpp
index 6d4f8c25e..c8b65b1ef 100644
--- a/modules/imgproc/src/featureselect.cpp
+++ b/modules/imgproc/src/featureselect.cpp
@@ -121,7 +121,7 @@ static bool ocl_goodFeaturesToTrack( InputArray _image, OutputArray _corners,
 
         tmpCorners.resize(total);
         Mat mcorners(1, totalb, CV_8UC1, &tmpCorners[0]);
-        corners.colRange(0, totalb).copyTo(mcorners);
+        corners.colRange(0, totalb).getMat(ACCESS_READ).copyTo(mcorners);
     }
 
     std::sort( tmpCorners.begin(), tmpCorners.end() );
diff --git a/modules/imgproc/test/ocl/test_gftt.cpp b/modules/imgproc/test/ocl/test_gftt.cpp
index c92469612..62bbce077 100644
--- a/modules/imgproc/test/ocl/test_gftt.cpp
+++ b/modules/imgproc/test/ocl/test_gftt.cpp
@@ -81,6 +81,12 @@ PARAM_TEST_CASE(GoodFeaturesToTrack, double, bool)
 
         UMAT_UPLOAD_INPUT_PARAMETER(src)
     }
+
+    void UMatToVector(const UMat & um, std::vector<Point2f> & v) const
+    {
+        v.resize(points.cols);
+        um.getMat(ACCESS_READ).copyTo(v);
+    }
 };
 
 const int GoodFeaturesToTrack::maxCorners = 1000;
@@ -96,13 +102,11 @@ OCL_TEST_P(GoodFeaturesToTrack, Accuracy)
 
         OCL_OFF(cv::goodFeaturesToTrack(src_roi, points, maxCorners, qualityLevel, minDistance, noArray()));
         ASSERT_FALSE(points.empty());
-        pts.resize(points.cols);
-        points.copyTo(pts);
+        UMatToVector(points, pts);
 
         OCL_ON(cv::goodFeaturesToTrack(usrc_roi, upoints, maxCorners, qualityLevel, minDistance));
         ASSERT_FALSE(upoints.empty());
-        upts.resize(upoints.cols);
-        upoints.copyTo(upts);
+        UMatToVector(upoints, upts);
 
         ASSERT_EQ(upts.size(), pts.size());
 
@@ -117,7 +121,7 @@ OCL_TEST_P(GoodFeaturesToTrack, Accuracy)
         }
 
         double bad_ratio = static_cast<double>(mistmatch) / pts.size();
-        ASSERT_GE(1e-3, bad_ratio);
+        ASSERT_GE(1e-2, bad_ratio);
     }
 }