diff --git a/packages/libusb/src/libusb.pp b/packages/libusb/src/libusb.pp
index 693aaee3a0..b4c2d8cb1f 100644
--- a/packages/libusb/src/libusb.pp
+++ b/packages/libusb/src/libusb.pp
@@ -1145,7 +1145,7 @@ function libusb_setlocale(const locale:pansichar):integer;LIBUSB_CALL;external l
 
 function libusb_strerror(errcode:libusb_error):pansichar;LIBUSB_CALL;external libusb1;
 function libusb_get_device_list(ctx:plibusb_context;var list:pplibusb_device):ssize_t;LIBUSB_CALL;external libusb1;
-procedure libusb_free_device_list(list:plibusb_device;unref_devices:integer);LIBUSB_CALL;external libusb1;
+procedure libusb_free_device_list(list:pplibusb_device;unref_devices:integer);LIBUSB_CALL;external libusb1;
 function libusb_ref_device(dev:plibusb_device):plibusb_device;LIBUSB_CALL;external libusb1;
 procedure libusb_unref_device(dev:plibusb_device);LIBUSB_CALL;external libusb1;
 function libusb_get_configuration(dev:plibusb_device_handle;