--- a/cmake/OpenCVCompilerOptions.cmake
+++ b/cmake/OpenCVCompilerOptions.cmake
@@ -114,8 +114,6 @@ if(CMAKE_COMPILER_IS_GNUCXX)
   add_extra_compiler_option(-Wformat)
   add_extra_compiler_option(-Werror=format-security -Wformat)
   add_extra_compiler_option(-Wmissing-declarations)
-  add_extra_compiler_option(-Wmissing-prototypes)
-  add_extra_compiler_option(-Wstrict-prototypes)
   add_extra_compiler_option(-Wundef)
   add_extra_compiler_option(-Winit-self)
   add_extra_compiler_option(-Wpointer-arith)