diff --git a/src/hfp.h b/src/hfp.h
index 078734fac..af7c0221a 100644
--- a/src/hfp.h
+++ b/src/hfp.h
@@ -222,7 +222,7 @@ typedef enum {
     HFP_AG_INCOMING_CALL_ACCEPETED_BY_HF,
     HFP_AG_TERMINATE_CALL_BY_AG,
     HFP_AG_TERMINATE_CALL_BY_HF,
-    HFP_AG_CALL_DROPED,
+    HFP_AG_CALL_DROPPED,
 } hfp_ag_call_event_t;
 
 
diff --git a/src/hfp_ag.c b/src/hfp_ag.c
index 2251e8edb..243563f43 100644
--- a/src/hfp_ag.c
+++ b/src/hfp_ag.c
@@ -816,7 +816,6 @@ static void hfp_ag_trigger_terminate_call(void){
     }
 }
 
-
 static void hfp_ag_call_sm(hfp_ag_call_event_t event){
     switch (event){
         case HFP_AG_INCOMING_CALL:
@@ -857,19 +856,18 @@ static void hfp_ag_call_sm(hfp_ag_call_event_t event){
             }
             break;
         case HFP_AG_TERMINATE_CALL_BY_AG:
+        case HFP_AG_CALL_DROPPED:
              switch (hfp_ag_call_state){
                 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT:
                     hfp_ag_callsetup_state = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS;
                     hfp_ag_call_state = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS;
                     hfp_ag_trigger_terminate_call();
-                    printf("TODO AG termante call\n");
+                    printf("TODO AG terminate or drop call\n");
                     break;
                 default:
                     break;
             }
             break;
-        case HFP_AG_CALL_DROPED:
-            break;
         default:
             break;
     }
@@ -1101,17 +1099,20 @@ void hfp_ag_incoming_call(void){
     hfp_ag_call_sm(HFP_AG_INCOMING_CALL);
 }
 
+void hfp_ag_call_dropped(void){
+    hfp_ag_call_sm(HFP_AG_CALL_DROPPED);
+}
 
+// call from AG UI
 void hfp_ag_answer_incoming_call(void){
     hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPETED_BY_AG);
 }
-/**
- * @brief 
- */
+
 void hfp_ag_terminate_call(void){
     hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG);
 }
 
+
 void hfp_ag_audio_connection_transfer_towards_ag(bd_addr_t bd_addr){
     hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr);
     if (connection->call_state != HFP_CALL_ACTIVE) return;
diff --git a/src/hfp_ag.h b/src/hfp_ag.h
index ac00a9c99..ba64e6464 100644
--- a/src/hfp_ag.h
+++ b/src/hfp_ag.h
@@ -175,6 +175,11 @@ void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone);
  */
 void hfp_ag_incoming_call(void);
 
+/**
+ * @brief 
+ */
+void hfp_ag_call_dropped(void);
+
 /**
  * @brief 
  */