diff --git a/doc/doxygen/wayland.doxygen.in b/doc/doxygen/wayland.doxygen.in
index 9d7fa0c..3913a13 100644
--- a/doc/doxygen/wayland.doxygen.in
+++ b/doc/doxygen/wayland.doxygen.in
@@ -8,7 +8,8 @@ QUIET                  = YES
 HTML_TIMESTAMP         = YES
 GENERATE_LATEX         = NO
 MAN_LINKS              = YES
-PREDEFINED             = WL_EXPORT=
+PREDEFINED             = WL_EXPORT=              \
+                         WL_PRINTF(x,y)=
 MACRO_EXPANSION        = YES
 EXPAND_ONLY_PREDEF     = YES
 DOT_MULTI_TARGETS      = YES