diff --git a/debian/libnfc4.symbols b/debian/libnfc4.symbols
index df9dc8e..48a856d 100644
--- a/debian/libnfc4.symbols
+++ b/debian/libnfc4.symbols
@@ -54,3 +54,5 @@ libnfc.so.4 libnfc4 #MINVER#
  str_nfc_baud_rate@Base 1.7.0~rc2
  str_nfc_modulation_type@Base 1.7.0~rc2
  str_nfc_target@Base 1.7.0~rc2
+ usb_initialized@Base 1.7.0~rc6-0
+ usb_prepare@Base 1.7.0~rc6-0