freedesktop.org.xml.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/freedesktop.org.xml.in b/freedesktop.org.xml.in
index b1a2724..f64b332 100644
--- a/freedesktop.org.xml.in
+++ b/freedesktop.org.xml.in
@@ -4471,7 +4471,7 @@ command to generate the output files.
   </mime-type>
   <mime-type type="text/x-dsrc">
     <_comment>D source code</_comment>
-    <sub-class-of type="text/plain"/>
+    <sub-class-of type="text/x-csrc"/>
     <glob pattern="*.d"/>
   </mime-type>
   <mime-type type="application/xml-dtd">