diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ca653e99e7..0d0acb5f54f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,15 +96,11 @@ set(CMAKE_AR ${TOOLCHAIN_PREFIX}ar)
 
 #FIXME: -fstack-protector
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os -Wno-sized-deallocation -fno-sized-deallocation -fno-exceptions -fno-rtti -Wno-address-of-packed-member -Wundef -Wcast-qual -Wwrite-strings -Wimplicit-fallthrough -Wno-nonnull-compare -Wno-deprecated-copy")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os -Wno-sized-deallocation -fno-sized-deallocation -fno-exceptions -fno-rtti -Wno-address-of-packed-member -Wundef -Wcast-qual -Wwrite-strings -Wimplicit-fallthrough -Wno-nonnull-compare -Wno-deprecated-copy -Wno-expansion-to-defined")
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DDEBUG -DSANITIZE_PTRS")
 add_link_options(--sysroot ${CMAKE_BINARY_DIR}/Root)
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-expansion-to-defined")
-endif()
-
 include_directories(Libraries/LibC)
 include_directories(Services)
 include_directories(${CMAKE_CURRENT_BINARY_DIR}/Services)