diff --git a/cmake/OpenCVCompilerOptions.cmake b/cmake/OpenCVCompilerOptions.cmake
index 4ba6469979..8ead1a1703 100644
--- a/cmake/OpenCVCompilerOptions.cmake
+++ b/cmake/OpenCVCompilerOptions.cmake
@@ -239,6 +239,10 @@ if(MSVC)
       set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /fp:fast") # !! important - be on the same wave with x64 compilers
     endif()
   endif()
+
+  if(OPENCV_WARNINGS_ARE_ERRORS)
+    set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /WX")
+  endif()
 endif()
 
 # Extra link libs if the user selects building static libs: