diff --git a/doc/doxygen.cfg.in b/doc/doxygen.cfg.in
index 504d41c..f4ccf1e 100644
--- a/doc/doxygen.cfg.in
+++ b/doc/doxygen.cfg.in
@@ -2113,7 +2113,8 @@
 
 PREDEFINED             = API_EXPORTED= \
                          DEFAULT_VISIBILITY= \
-                         LIBUSB_CALL=
+                         LIBUSB_CALL= \
+                         LIBUSB_PACKED=
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The