diff --git a/AK/StdLibExtras.h b/AK/StdLibExtras.h
index 6d6dba878c..84fb6034ca 100644
--- a/AK/StdLibExtras.h
+++ b/AK/StdLibExtras.h
@@ -16,7 +16,7 @@
 
 #include <AK/Assertions.h>
 
-#define OFFSET_OF(class, member) (reinterpret_cast<ptrdiff_t>(&reinterpret_cast<class*>(0x1000)->member) - 0x1000)
+#define OFFSET_OF(class, member) __builtin_offsetof(class, member)
 
 namespace AK {
 
diff --git a/Meta/CMake/common_compile_options.cmake b/Meta/CMake/common_compile_options.cmake
index 684a3ad002..ffd6252f02 100644
--- a/Meta/CMake/common_compile_options.cmake
+++ b/Meta/CMake/common_compile_options.cmake
@@ -6,6 +6,8 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 add_compile_options(-Wall)
 add_compile_options(-Wextra)
 
+add_compile_options(-Wno-invalid-offsetof)
+
 add_compile_options(-Wno-unknown-warning-option)
 add_compile_options(-Wno-unused-command-line-argument)