diff --git a/include/patty/ax25/frame.h b/include/patty/ax25/frame.h
index ed75534..576f552 100644
--- a/include/patty/ax25/frame.h
+++ b/include/patty/ax25/frame.h
@@ -92,10 +92,6 @@ ssize_t patty_ax25_frame_decode_control(patty_ax25_frame *frame,
                                         size_t offset,
                                         size_t len);
 
-ssize_t patty_ax25_frame_decode(patty_ax25_frame *frame,
-                                enum patty_ax25_frame_format format,
-                                void *buf,
-                                size_t len);
 
 ssize_t patty_ax25_frame_encode(patty_ax25_frame *frame,
                                 enum patty_ax25_frame_format format,