diff --git a/src/hci.c b/src/hci.c
index c0f962dd2..cc5b5f54a 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -195,6 +195,10 @@ uint8_t hci_number_free_acl_slots(){
     return free_slots;
 }
 
+uint16_t hci_max_acl_data_packet_length(){
+    return hci_stack.acl_data_packet_length;
+}
+
 int hci_ready_to_send(hci_con_handle_t handle){
     return hci_number_free_acl_slots() && hci_number_outgoing_packets(handle) < 2;
 }
diff --git a/src/hci.h b/src/hci.h
index 56cfbd7ab..60d65fb77 100644
--- a/src/hci.h
+++ b/src/hci.h
@@ -250,6 +250,7 @@ uint8_t hci_number_free_acl_slots();
 int     hci_ready_to_send(hci_con_handle_t handle);
 int     hci_authentication_active_for_handle(hci_con_handle_t handle);
 void    hci_drop_link_key_for_bd_addr(bd_addr_t *addr);
+uint16_t hci_max_acl_data_packet_length();
 
 // 
 void hci_emit_state();