diff --git a/system/build/Android.bp b/system/build/Android.bp
index c3c6445bd5475713082c9755fd576d9d8c60966e..db093d0028bd5d7358462c691c1f2922cb235822 100644
--- a/system/build/Android.bp
+++ b/system/build/Android.bp
@@ -35,6 +35,13 @@ cc_defaults {
     include_dirs: [
         "packages/modules/Bluetooth/system/gd",
     ],
+    target: {
+        host: {
+            cflags: [
+                "-DOS_GENERIC",
+            ],
+        },
+    },
 }
 
 fluoride_defaults {