diff --git a/Utilities/bootstrap b/Utilities/bootstrap
index 8a10f221a06..3ac4da0aeb7 100755
--- a/Utilities/bootstrap
+++ b/Utilities/bootstrap
@@ -805,7 +805,7 @@ def get_swiftpm_flags(args):
 
     build_target = get_build_target(args)
     cross_compile_hosts = args.cross_compile_hosts
-    if build_target == 'x86_64-apple-macosx' and "macosx-arm64" in cross_compile_hosts:
+    if cross_compile_hosts is not None:
         build_flags += ["--arch", "x86_64", "--arch", "arm64"]
     elif cross_compile_hosts:
         error("cannot cross-compile for %s" % cross_compile_hosts)