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-rw-r--r--docs/doxygen.cfg.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/doxygen.cfg.in b/docs/doxygen.cfg.in
index fe5674a166..f6c7cba6d3 100644
--- a/docs/doxygen.cfg.in
+++ b/docs/doxygen.cfg.in
@@ -2205,7 +2205,7 @@ DIRECTORY_GRAPH = YES
# The default value is: png.
# This tag requires that the tag HAVE_DOT is set to YES.
-DOT_IMAGE_FORMAT = png
+DOT_IMAGE_FORMAT = @DOT_IMAGE_FORMAT@
# 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.