diff --git a/.github/workflows/rpcsx.yml b/.github/workflows/rpcsx.yml
index 1bc705c3..eb20c00a 100644
--- a/.github/workflows/rpcsx.yml
+++ b/.github/workflows/rpcsx.yml
@@ -38,7 +38,7 @@ jobs:
 
     - name: Build RPCSX
       run: |
-        cmake -B build -DCMAKE_BUILD_TYPE=Release && \
+        cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS_INIT="-march=native" && \
         cmake --build build -j4
 
     - name: Upload RPCSX
diff --git a/rpcsx-os/CMakeLists.txt b/rpcsx-os/CMakeLists.txt
index 47e382cd..67ba3251 100644
--- a/rpcsx-os/CMakeLists.txt
+++ b/rpcsx-os/CMakeLists.txt
@@ -64,7 +64,7 @@ add_executable(rpcsx-os
 target_include_directories(rpcsx-os PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries(rpcsx-os PUBLIC orbis::kernel amdgpu::bridge rx libcrypto unwind unwind-x86_64 xbyak)
 target_link_options(rpcsx-os PUBLIC "LINKER:-Ttext-segment,0x0000010000000000")
-target_compile_options(rpcsx-os PRIVATE "-march=native")
+target_compile_options(rpcsx-os PRIVATE "-mfsgsbase")
 
 set_target_properties(rpcsx-os PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 install(TARGETS rpcsx-os RUNTIME DESTINATION bin)