diff --git a/cmake/checks/opencl.cpp b/cmake/checks/opencl.cpp
index 95a36f3ac7..b71b92f670 100644
--- a/cmake/checks/opencl.cpp
+++ b/cmake/checks/opencl.cpp
@@ -1,8 +1,5 @@
-#if defined __APPLE__
-#include <OpenCL/cl.h>
-#else
+// custom OpenCL headers are located in "CL" subfolder (3rdparty/include/...)
 #include <CL/cl.h>
-#endif
 
 #ifndef _MSC_VER
 #ifdef CL_VERSION_1_2
diff --git a/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_core.hpp b/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_core.hpp
index f824ce9334..801709e2c0 100644
--- a/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_core.hpp
+++ b/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_core.hpp
@@ -95,11 +95,7 @@
 #define clUnloadPlatformCompiler clUnloadPlatformCompiler_
 #define clWaitForEvents clWaitForEvents_
 
-#if defined __APPLE__
-#include <OpenCL/cl.h>
-#else
 #include <CL/cl.h>
-#endif
 
 // generated by parser_cl.py
 #undef clBuildProgram
diff --git a/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_gl.hpp b/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_gl.hpp
index f37ad158e1..64a7fedbac 100644
--- a/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_gl.hpp
+++ b/modules/core/include/opencv2/core/opencl/runtime/autogenerated/opencl_gl.hpp
@@ -17,11 +17,7 @@
 #define clGetGLObjectInfo clGetGLObjectInfo_
 #define clGetGLTextureInfo clGetGLTextureInfo_
 
-#if defined __APPLE__
-#include <OpenCL/cl_gl.h>
-#else
 #include <CL/cl_gl.h>
-#endif
 
 // generated by parser_cl.py
 #undef clCreateFromGLBuffer
diff --git a/modules/core/src/opencl/runtime/generator/template/opencl_core.hpp.in b/modules/core/src/opencl/runtime/generator/template/opencl_core.hpp.in
index 4196622c0b..b6c8f05d51 100644
--- a/modules/core/src/opencl/runtime/generator/template/opencl_core.hpp.in
+++ b/modules/core/src/opencl/runtime/generator/template/opencl_core.hpp.in
@@ -4,11 +4,7 @@
 
 @CL_REMAP_ORIGIN@
 
-#if defined __APPLE__
-#include <OpenCL/cl.h>
-#else
 #include <CL/cl.h>
-#endif
 
 @CL_REMAP_DYNAMIC@
 
diff --git a/modules/core/src/opencl/runtime/generator/template/opencl_gl.hpp.in b/modules/core/src/opencl/runtime/generator/template/opencl_gl.hpp.in
index 24434d2de7..4bed423318 100644
--- a/modules/core/src/opencl/runtime/generator/template/opencl_gl.hpp.in
+++ b/modules/core/src/opencl/runtime/generator/template/opencl_gl.hpp.in
@@ -4,11 +4,7 @@
 
 @CL_REMAP_ORIGIN@
 
-#if defined __APPLE__
-#include <OpenCL/cl_gl.h>
-#else
 #include <CL/cl_gl.h>
-#endif
 
 @CL_REMAP_DYNAMIC@