diff --git a/CMakeModules/DuckStationUtils.cmake b/CMakeModules/DuckStationUtils.cmake
index 9758f14fb..cdc01a52c 100644
--- a/CMakeModules/DuckStationUtils.cmake
+++ b/CMakeModules/DuckStationUtils.cmake
@@ -58,7 +58,7 @@ function(detect_architecture)
       message(STATUS "Building x86_64 MacOS binaries.")
       set(CPU_ARCH_X64 TRUE PARENT_SCOPE)
       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Xarch_x86_64 -msse4.1" PARENT_SCOPE)
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Xarch_864_64 -msse4.1" PARENT_SCOPE)
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Xarch_x86_64 -msse4.1" PARENT_SCOPE)
     endif()
     if("arm64" IN_LIST CMAKE_OSX_ARCHITECTURES)
       message(STATUS "Building ARM64 MacOS binaries.")