diff --git a/mbox2web b/mbox2web
index b1c70d8..84c9a6b 100755
--- a/mbox2web
+++ b/mbox2web
@@ -97,6 +97,7 @@ def save_part(msg, disposition):
         "text/x-java":               ".java",
         "application/x-sh":          ".sh",
         "text/x-patch":              ".patch",
+        "text/x-c++src":             ".c++",
     }[content_type]
 
     name = msg.get_param("name") or "(data)"
diff --git a/templates/attachment_text_x-c++src.html b/templates/attachment_text_x-c++src.html
new file mode 100644
index 0000000..d2185c4
--- /dev/null
+++ b/templates/attachment_text_x-c++src.html
@@ -0,0 +1,8 @@
+<div class="partouter">
+    <div class="partheader">
+        text/x-c++src
+    </div>
+    <div class="partinner">
+        <a href="{{url}}">{{name}}</a>
+    </div>
+</div>