diff --git a/doc/doxygen/Doxyfile.conf.in b/doc/doxygen/Doxyfile.conf.in
index de64c686fe..f25ddc4214 100644
--- a/doc/doxygen/Doxyfile.conf.in
+++ b/doc/doxygen/Doxyfile.conf.in
@@ -1986,10 +1986,10 @@ INCLUDE_FILE_PATTERNS  =
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-PREDEFINED             = HYDRAX \
-                         PAGED \
-                         LUASCRIPT \
-                         ANGELSCRIPT
+PREDEFINED             = USE_ANGELSCRIPT \
+                         USE_OPENAL \
+                         USE_SOCKETW \
+                         USE_CURL
 
 # 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