diff --git a/Package.swift b/Package.swift
index d7d1e50ac..2c2c147ba 100644
--- a/Package.swift
+++ b/Package.swift
@@ -13,7 +13,7 @@ let package = Package(
             path: ".",
             sources: ["ggml.c", "llama.cpp"],
             publicHeadersPath: "spm-headers",
-            cSettings: [.unsafeFlags(["-Wno-shorten-64-to-32", "-DGGML_USE_ACCELERATE"])],
+            cSettings: [.unsafeFlags(["-Wno-shorten-64-to-32"]), .define("GGML_USE_ACCELERATE")],
             linkerSettings: [
                 .linkedFramework("Accelerate")
             ]