diff --git a/doc/doxygen/Doxylocal b/doc/doxygen/Doxylocal
index 9b85a30f9ff521873648e36d2c63da9dbee2a870..9496adc73c56207eeb1be79c57912d96a2cc25ae 100644
--- a/doc/doxygen/Doxylocal
+++ b/doc/doxygen/Doxylocal
@@ -28,6 +28,8 @@ HTML_HEADER            = @srcdir@/header.html
 
 HTML_EXTRA_STYLESHEET  = @srcdir@/customdoxygendumux.css
 
+HTML_FILE_EXTENSION    = .xhtml
+
 EXCLUDE_PATTERNS       =
 
 ALIASES               += "warning=\xrefitem warning \"Warning List\" \"Warning List\""
@@ -45,5 +47,7 @@ EXPAND_ONLY_PREDEF     = YES
 
 DOT_GRAPH_MAX_NODES    = 100
 
+DOT_IMAGE_FORMAT       = svg
+
 # uncomment for the website
 # SHORT_NAMES           = NO