diff --git a/doc/doxygen.conf.in b/doc/doxygen.conf.in
index 87ba67aee..6171e58e8 100644
--- a/doc/doxygen.conf.in
+++ b/doc/doxygen.conf.in
@@ -5,7 +5,7 @@ TAB_SIZE               = 8
 OPTIMIZE_OUTPUT_FOR_C  = YES
 EXTRACT_ALL            = YES
 QUIET                  = YES
-HTML_TIMESTAMP         = YES
+TIMESTAMP              = YES
 MATHJAX_RELPATH        = https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/
 GENERATE_LATEX         = NO
 INPUT                  = @TOPSRCDIR@/libwacom/libwacom.h