diff --git a/modules/gpu/CMakeLists.txt b/modules/gpu/CMakeLists.txt
index 05b65f241..8fba2ef4e 100644
--- a/modules/gpu/CMakeLists.txt
+++ b/modules/gpu/CMakeLists.txt
@@ -28,7 +28,7 @@ if(HAVE_CUDA)
 
   source_group("Src\\NVidia" FILES ${ncv_files})
   ocv_include_directories("src/nvidia" "src/nvidia/core" "src/nvidia/NPP_staging" ${CUDA_INCLUDE_DIRS})
-  ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef -Wmissing-declarations /wd4211 /wd4201 /wd4100 /wd4505 /wd4408)
+  ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef -Wmissing-declarations -Wshadow -Wunused-parameter /wd4211 /wd4201 /wd4100 /wd4505 /wd4408)
   string(REPLACE "-Wsign-promo" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
   #set (CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} "-Xcompiler;/EHsc-;")
 
diff --git a/modules/gpu/perf/perf_precomp.hpp b/modules/gpu/perf/perf_precomp.hpp
index 5e31c4cde..c9cf886bc 100644
--- a/modules/gpu/perf/perf_precomp.hpp
+++ b/modules/gpu/perf/perf_precomp.hpp
@@ -61,7 +61,6 @@
 #endif
 
 #include "opencv2/ts/ts.hpp"
-#include "opencv2/ts/ts_perf.hpp"
 #include "opencv2/ts/gpu_perf.hpp"
 
 #include "opencv2/core/core.hpp"
diff --git a/modules/gpu/perf4au/main.cpp b/modules/gpu/perf4au/main.cpp
index 68c00dbaf..f6a65ad63 100644
--- a/modules/gpu/perf4au/main.cpp
+++ b/modules/gpu/perf4au/main.cpp
@@ -41,17 +41,19 @@
 //M*/
 
 #include <cstdio>
+
 #ifdef HAVE_CVCONFIG_H
 #include "cvconfig.h"
 #endif
+
+#include "opencv2/ts/ts.hpp"
+#include "opencv2/ts/gpu_perf.hpp"
+
 #include "opencv2/core/core.hpp"
 #include "opencv2/gpu/gpu.hpp"
 #include "opencv2/highgui/highgui.hpp"
 #include "opencv2/video/video.hpp"
 #include "opencv2/legacy/legacy.hpp"
-#include "opencv2/ts/ts.hpp"
-#include "opencv2/ts/ts_perf.hpp"
-#include "opencv2/ts/gpu_perf.hpp"
 
 int main(int argc, char* argv[])
 {
diff --git a/modules/nonfree/perf/perf_gpu.cpp b/modules/nonfree/perf/perf_gpu.cpp
index af95dbb7d..aa8516b1c 100644
--- a/modules/nonfree/perf/perf_gpu.cpp
+++ b/modules/nonfree/perf/perf_gpu.cpp
@@ -41,6 +41,9 @@
 //M*/
 
 #include "perf_precomp.hpp"
+
+#if defined(HAVE_OPENCV_GPU) && defined(HAVE_CUDA)
+
 #include "opencv2/ts/gpu_perf.hpp"
 
 using namespace std;
@@ -59,8 +62,6 @@ using namespace perf;
 #  define BUILD_WITH_VIDEO_INPUT_SUPPORT 0
 #endif
 
-#if defined(HAVE_OPENCV_GPU) && defined(HAVE_CUDA)
-
 //////////////////////////////////////////////////////////////////////
 // SURF
 
diff --git a/modules/nonfree/perf/perf_precomp.hpp b/modules/nonfree/perf/perf_precomp.hpp
index 50a7f98f5..addba7b00 100644
--- a/modules/nonfree/perf/perf_precomp.hpp
+++ b/modules/nonfree/perf/perf_precomp.hpp
@@ -10,16 +10,17 @@
 #define __OPENCV_PERF_PRECOMP_HPP__
 
 #include "opencv2/ts/ts.hpp"
+
 #include "opencv2/nonfree/nonfree.hpp"
 #include "opencv2/highgui/highgui.hpp"
-
 #include "opencv2/opencv_modules.hpp"
+
 #ifdef HAVE_OPENCV_OCL
 #  include "opencv2/nonfree/ocl.hpp"
 #endif
 
-#if defined(HAVE_OPENCV_GPU) && defined(HAVE_CUDA)
-    #include "opencv2/nonfree/gpu.hpp"
+#ifdef HAVE_OPENCV_GPU
+#  include "opencv2/nonfree/gpu.hpp"
 #endif
 
 #ifdef GTEST_CREATE_SHARED_LIBRARY
diff --git a/modules/superres/perf/perf_precomp.hpp b/modules/superres/perf/perf_precomp.hpp
index 85b6c11f7..f05203718 100644
--- a/modules/superres/perf/perf_precomp.hpp
+++ b/modules/superres/perf/perf_precomp.hpp
@@ -55,10 +55,11 @@
 #include "cvconfig.h"
 #endif
 
+#include "opencv2/ts/ts.hpp"
+#include "opencv2/ts/gpu_perf.hpp"
+
 #include "opencv2/core/core.hpp"
 #include "opencv2/core/gpumat.hpp"
-#include "opencv2/ts/ts_perf.hpp"
-#include "opencv2/ts/gpu_perf.hpp"
 #include "opencv2/superres/superres.hpp"
 #include "opencv2/superres/optical_flow.hpp"