diff --git a/src/ble/sm.c b/src/ble/sm.c
index 4b03dcaeb..a80388d1d 100644
--- a/src/ble/sm.c
+++ b/src/ble/sm.c
@@ -3006,6 +3006,7 @@ static bool sm_ctkd_from_le(sm_connection_t *sm_connection) {
 	// get started (all of the above are true)
 	return true;
 #else
+    UNUSED(sm_connection);
 	return false;
 #endif
 }
diff --git a/src/hci.c b/src/hci.c
index 12fdc15c2..1c819075c 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -2243,7 +2243,6 @@ static void event_handler(uint8_t *packet, uint16_t size){
         return;
     }
 
-    bd_addr_t addr;
     bd_addr_type_t addr_type;
     hci_con_handle_t handle;
     hci_connection_t * conn;
@@ -2252,6 +2251,7 @@ static void event_handler(uint8_t *packet, uint16_t size){
 
 #ifdef ENABLE_CLASSIC
     uint8_t link_type;
+    bd_addr_t addr;
 #endif
 
     // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet));
@@ -5967,8 +5967,10 @@ bool gap_bonded(hci_con_handle_t con_handle){
 	hci_connection_t * hci_connection = hci_connection_for_handle(con_handle);
 	if (hci_connection == NULL) return 0;
 
+#ifdef ENABLE_CLASSIC
 	link_key_t link_key;
 	link_key_type_t link_key_type;
+#endif
 	switch (hci_connection->address_type){
 		case BD_ADDR_TYPE_LE_PUBLIC:
 		case BD_ADDR_TYPE_LE_RANDOM:
diff --git a/src/l2cap.c b/src/l2cap.c
index 0c86cc00e..032d783fd 100644
--- a/src/l2cap.c
+++ b/src/l2cap.c
@@ -3986,6 +3986,7 @@ static gap_security_level_t l2cap_le_security_level_for_connection(hci_con_handl
 static void l2cap_sm_packet_handler(uint8_t packet_type, uint16_t channel_nr, uint8_t *packet, uint16_t size) {
     UNUSED(channel_nr);
     UNUSED(size);
+    UNUSED(packet_type);
     btstack_assert(packet_type = HCI_EVENT_PACKET);
     if (hci_event_packet_get_type(packet) != SM_EVENT_PAIRING_COMPLETE) return;
     hci_con_handle_t con_handle = sm_event_pairing_complete_get_handle(packet);