diff --git a/devices/motorola-surfna/default.nix b/devices/motorola-surfna/default.nix
index 24ceece5..0da16ac6 100644
--- a/devices/motorola-surfna/default.nix
+++ b/devices/motorola-surfna/default.nix
@@ -50,5 +50,6 @@
 
   mobile.usb.gadgetfs.functions = {
     rndis = "rndis_bam.rndis";
+    adb = "ffs.adb";
   };
 }