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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 2ffcce036..5045598ba 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -32,7 +32,7 @@ PROJECT_NAME = Eigen
# if some version control system is used.
#EIGEN_VERSION is set in the root CMakeLists.txt
-PROJECT_NUMBER = ${EIGEN_VERSION}
+PROJECT_NUMBER = "${EIGEN_VERSION}"
# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
# base path where the generated documentation will be put.