diff --git a/modules/core/src/copy.cpp b/modules/core/src/copy.cpp
index 894776bb32f06b35cd0db7ed522dbe932e92e15b..b8d87fc2240dce89f2d3128ab2d7ac0db982b913 100644
--- a/modules/core/src/copy.cpp
+++ b/modules/core/src/copy.cpp
@@ -232,10 +232,7 @@ void Mat::copyTo( OutputArray _dst ) const
             const uchar* sptr = data;
             uchar* dptr = dst.data;
 
-            // to handle the copying 1xn matrix => nx1 std vector.
-            Size sz = size() == dst.size() ?
-                getContinuousSize(*this, dst) :
-                getContinuousSize(*this);
+            Size sz = getContinuousSize(*this, dst);
             size_t len = sz.width*elemSize();
 
             for( ; sz.height--; sptr += step, dptr += dst.step )
@@ -286,6 +283,7 @@ void Mat::copyTo( OutputArray _dst, InputArray _mask ) const
 
     if( dims <= 2 )
     {
+        CV_Assert( size() == mask.size() );
         Size sz = getContinuousSize(*this, dst, mask, mcn);
         copymask(data, step, mask.data, mask.step, dst.data, dst.step, sz, &esz);
         return;
diff --git a/modules/core/src/precomp.hpp b/modules/core/src/precomp.hpp
index ec8dcc9f234601c413f2a952aaf64861a395d914..c53224e0aa24022516c4c628bf8a41e0cbf802bd 100644
--- a/modules/core/src/precomp.hpp
+++ b/modules/core/src/precomp.hpp
@@ -129,14 +129,12 @@ template<typename T> struct OpMax
 
 inline Size getContinuousSize( const Mat& m1, int widthScale=1 )
 {
-    CV_Assert(m1.dims <= 2);
     return m1.isContinuous() ? Size(m1.cols*m1.rows*widthScale, 1) :
         Size(m1.cols*widthScale, m1.rows);
 }
 
 inline Size getContinuousSize( const Mat& m1, const Mat& m2, int widthScale=1 )
 {
-    CV_Assert(m1.dims <= 2 && m1.size() == m2.size());
     return (m1.flags & m2.flags & Mat::CONTINUOUS_FLAG) != 0 ?
         Size(m1.cols*m1.rows*widthScale, 1) : Size(m1.cols*widthScale, m1.rows);
 }
@@ -144,7 +142,6 @@ inline Size getContinuousSize( const Mat& m1, const Mat& m2, int widthScale=1 )
 inline Size getContinuousSize( const Mat& m1, const Mat& m2,
                                const Mat& m3, int widthScale=1 )
 {
-    CV_Assert(m1.dims <= 2 && m1.size() == m2.size() && m1.size() == m3.size());
     return (m1.flags & m2.flags & m3.flags & Mat::CONTINUOUS_FLAG) != 0 ?
         Size(m1.cols*m1.rows*widthScale, 1) : Size(m1.cols*widthScale, m1.rows);
 }
@@ -153,7 +150,6 @@ inline Size getContinuousSize( const Mat& m1, const Mat& m2,
                                const Mat& m3, const Mat& m4,
                                int widthScale=1 )
 {
-    CV_Assert(m1.dims <= 2 && m1.size() == m2.size() && m1.size() == m3.size() && m1.size() == m4.size());
     return (m1.flags & m2.flags & m3.flags & m4.flags & Mat::CONTINUOUS_FLAG) != 0 ?
         Size(m1.cols*m1.rows*widthScale, 1) : Size(m1.cols*widthScale, m1.rows);
 }
@@ -162,7 +158,6 @@ inline Size getContinuousSize( const Mat& m1, const Mat& m2,
                                const Mat& m3, const Mat& m4,
                                const Mat& m5, int widthScale=1 )
 {
-    CV_Assert(m1.dims <= 2 && m1.size() == m2.size() && m1.size() == m3.size() && m1.size() == m4.size() && m1.size() == m5.size());
     return (m1.flags & m2.flags & m3.flags & m4.flags & m5.flags & Mat::CONTINUOUS_FLAG) != 0 ?
         Size(m1.cols*m1.rows*widthScale, 1) : Size(m1.cols*widthScale, m1.rows);
 }
diff --git a/modules/core/test/test_mat.cpp b/modules/core/test/test_mat.cpp
index 514b587d75bd9b334cd0bc0b09192c57d5629a16..a6ebe152d9fa4041d859a647472166e642fcc132 100644
--- a/modules/core/test/test_mat.cpp
+++ b/modules/core/test/test_mat.cpp
@@ -897,3 +897,24 @@ TEST(Core_Mat, reshape_1942)
     );
     ASSERT_EQ(1, cn);
 }
+
+TEST(Core_Mat, copyNx1ToVector)
+{
+    cv::Mat_<uchar> src(5, 1);
+    cv::Mat_<uchar> ref_dst8;
+    cv::Mat_<ushort> ref_dst16;
+    std::vector<uchar> dst8;
+    std::vector<ushort> dst16;
+
+    src << 1, 2, 3, 4, 5;
+
+    src.copyTo(ref_dst8);
+    src.copyTo(dst8);
+
+    ASSERT_PRED_FORMAT2(cvtest::MatComparator(0, 0), ref_dst8, cv::Mat_<uchar>(dst8));
+
+    src.convertTo(ref_dst16, CV_16U);
+    src.convertTo(dst16, CV_16U);
+
+    ASSERT_PRED_FORMAT2(cvtest::MatComparator(0, 0), ref_dst16, cv::Mat_<ushort>(dst16));
+}