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-rw-r--r--doc/Doxyfile.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index c3317eae0..34c2d4ce9 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -1798,7 +1798,7 @@ DIRECTORY_GRAPH = YES
# HTML_FILE_EXTENSION to xhtml in order to make the SVG files
# visible in IE 9+ (other browsers do not have this requirement).
-DOT_IMAGE_FORMAT = png
+DOT_IMAGE_FORMAT = svg
# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
# enable generation of interactive SVG images that allow zooming and panning.