diff --git a/doc/Doxyfile_common b/doc/Doxyfile_common
index e6114514..a36a2c10 100644
--- a/doc/Doxyfile_common
+++ b/doc/Doxyfile_common
@@ -1525,7 +1525,7 @@ INCLUDE_FILE_PATTERNS  =
 # undefined via #undef or recursively expanded use the := operator
 # instead of the = operator.
 
-PREDEFINED             = __attribute__(x)=
+PREDEFINED             = __attribute__(x)= BEGIN_DECLS END_DECLS
 
 # 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.