diff --git a/include/patty/ax25/frame.h b/include/patty/ax25/frame.h
index 006663c..2fd3ca0 100644
--- a/include/patty/ax25/frame.h
+++ b/include/patty/ax25/frame.h
@@ -94,4 +94,10 @@ void patty_ax25_frame_set_ui(patty_ax25_frame *frame,
                              void *info,
                              size_t infolen);
 
+void patty_ax25_frame_set_sabme(patty_ax25_frame *frame,
+                                enum patty_ax25_frame_u_flags flags);
+
+void patty_ax25_frame_set_sabm(patty_ax25_frame *frame,
+                               enum patty_ax25_frame_u_flags flags);
+
 #endif /* _PATTY_AX25_FRAME_H */
diff --git a/src/frame.c b/src/frame.c
index 4a3a622..09ca9eb 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -353,8 +353,27 @@ void patty_ax25_frame_set_ui(patty_ax25_frame *frame,
                              uint8_t proto,
                              void *info,
                              size_t infolen) {
-    frame->control = PATTY_AX25_FRAME_U_UI | flags;
-    frame->proto   = proto;
-    frame->info    = info;
-    frame->infolen = infolen;
+    patty_ax25_frame_set(frame,
+                         PATTY_AX25_FRAME_U_UI | flags,
+                         proto,
+                         info,
+                         infolen);
+}
+
+void patty_ax25_frame_set_sabme(patty_ax25_frame *frame,
+                                enum patty_ax25_frame_u_flags flags) {
+    patty_ax25_frame_set(frame,
+                         PATTY_AX25_FRAME_U_SABME | flags,
+                         PATTY_AX25_PROTO_NONE,
+                         NULL,
+                         0);
+}
+
+void patty_ax25_frame_set_sabm(patty_ax25_frame *frame,
+                               enum patty_ax25_frame_u_flags flags) {
+    patty_ax25_frame_set_ui(frame,
+                            PATTY_AX25_FRAME_U_SABM | flags,
+                            PATTY_AX25_PROTO_NONE,
+                            NULL,
+                            0);
 }