diff --git a/x64-osx-openrct2.cmake b/x64-osx-openrct2.cmake
index 7e24cac2..32a439c5 100644
--- a/x64-osx-openrct2.cmake
+++ b/x64-osx-openrct2.cmake
@@ -3,6 +3,7 @@ set(VCPKG_CRT_LINKAGE dynamic)
 set(VCPKG_LIBRARY_LINKAGE dynamic)
 
 set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
+set(VCPKG_OSX_ARCHITECTURES x86_64)
 set(VCPKG_OSX_DEPLOYMENT_TARGET "10.13")
 
 set(VCPKG_BUILD_TYPE release)