diff --git a/selfdrive/can/process_dbc.py b/selfdrive/can/process_dbc.py
index c1da3ce45c..dc544f741f 100755
--- a/selfdrive/can/process_dbc.py
+++ b/selfdrive/can/process_dbc.py
@@ -28,7 +28,7 @@ def main():
   msgs = [(address, msg_name, msg_size, sorted(msg_sigs, key=lambda s: s.name not in ("COUNTER", "CHECKSUM"))) # process counter and checksums first
           for address, ((msg_name, msg_size), msg_sigs) in sorted(can_dbc.msgs.items()) if msg_sigs]
 
-  def_vals = {a: set(b) for a,b in can_dbc.def_vals.items()} #remove duplicates
+  def_vals = {a: sorted(set(b)) for a, b in can_dbc.def_vals.items()} # remove duplicates
   def_vals = sorted(def_vals.items())
 
   if can_dbc.name.startswith(("honda_", "acura_")):