diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index 8ee1d9baa1e2..4ab7b9cf1aaa 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -9602,7 +9602,7 @@
 # reached. The total size of the ring-buffer is slightly bigger than this.
 - name: media.audio.audiosink.threshold_ms
   type: AtomicFloat
-#if defined(XP_MACOSX) && defined(__aarch64__)
+#if defined(XP_MACOSX) && defined(MOZ_AARCH64)
   value: 1000.0
 #else
   value: 200.0