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-rw-r--r--template/Doxyfile.tmpl2
1 files changed, 1 insertions, 1 deletions
diff --git a/template/Doxyfile.tmpl b/template/Doxyfile.tmpl
index 872222197a..5cd1203ca6 100644
--- a/template/Doxyfile.tmpl
+++ b/template/Doxyfile.tmpl
@@ -55,7 +55,7 @@ PROJECT_NAME = Ruby
# could be handy for archiving the generated documentation or if some version
# control system is used.
-PROJECT_NUMBER = <%=RUBY_VERSION%><%= RUBY_PATCHLEVEL < 0 ? 'dev' : "p#{RUBY_PATCHLEVEL}" %> (<%=RUBY_RELEASE_DATE%> revision <%=RUBY_REVISION%>)
+PROJECT_NUMBER = "<%=RUBY_VERSION%><%= RUBY_PATCHLEVEL < 0 ? 'dev' : "p#{RUBY_PATCHLEVEL}" %> (<%=RUBY_RELEASE_DATE%> revision <%=RUBY_REVISION%>)"
# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewer a