diff --git a/modules/core/include/opencv2/core/gpu.hpp b/modules/core/include/opencv2/core/gpu.hpp
index 3ab299cf3cbf..9bacfc1a2690 100644
--- a/modules/core/include/opencv2/core/gpu.hpp
+++ b/modules/core/include/opencv2/core/gpu.hpp
@@ -375,19 +375,6 @@ class CV_EXPORTS Stream
     //! returns true if stream object is not default (!= 0)
     operator bool_type() const;
 
-    // obsolete methods
-
-    void enqueueDownload(const GpuMat& src, OutputArray dst);
-
-    void enqueueUpload(InputArray src, GpuMat& dst);
-
-    void enqueueCopy(const GpuMat& src, OutputArray dst);
-
-    void enqueueMemSet(GpuMat& src, Scalar val);
-    void enqueueMemSet(GpuMat& src, Scalar val, InputArray mask);
-
-    void enqueueConvert(const GpuMat& src, OutputArray dst, int dtype, double alpha = 1.0, double beta = 0.0);
-
     class Impl;
 
 private:
diff --git a/modules/core/include/opencv2/core/gpu.inl.hpp b/modules/core/include/opencv2/core/gpu.inl.hpp
index 2d08c4436fd6..13861170cb97 100644
--- a/modules/core/include/opencv2/core/gpu.inl.hpp
+++ b/modules/core/include/opencv2/core/gpu.inl.hpp
@@ -525,42 +525,6 @@ void swap(CudaMem& a, CudaMem& b)
 
 //////////////////////////////// Stream ///////////////////////////////
 
-inline
-void Stream::enqueueDownload(const GpuMat& src, OutputArray dst)
-{
-    src.download(dst, *this);
-}
-
-inline
-void Stream::enqueueUpload(InputArray src, GpuMat& dst)
-{
-    dst.upload(src, *this);
-}
-
-inline
-void Stream::enqueueCopy(const GpuMat& src, OutputArray dst)
-{
-    src.copyTo(dst, *this);
-}
-
-inline
-void Stream::enqueueMemSet(GpuMat& src, Scalar val)
-{
-    src.setTo(val, *this);
-}
-
-inline
-void Stream::enqueueMemSet(GpuMat& src, Scalar val, InputArray mask)
-{
-    src.setTo(val, mask, *this);
-}
-
-inline
-void Stream::enqueueConvert(const GpuMat& src, OutputArray dst, int dtype, double alpha, double beta)
-{
-    src.convertTo(dst, dtype, alpha, beta, *this);
-}
-
 inline
 Stream::Stream(const Ptr<Impl>& impl)
     : impl_(impl)