diff --git a/Doc/doxy.config.in b/Doc/doxy.config.in
index 7ad02907..b3778130 100644
--- a/Doc/doxy.config.in
+++ b/Doc/doxy.config.in
@@ -1525,7 +1525,8 @@ INCLUDE_FILE_PATTERNS  =
 # instead of the = operator.
 
 PREDEFINED             = DOXYGEN \
-                         OM_Attribute=class
+                         OM_Attribute=class \
+                         DOXY_IGNORE_THIS
 
 # 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.