Index: /applications/editors/josm/plugins/tag2link/resources/tag2link_sources.xml
===================================================================
--- /applications/editors/josm/plugins/tag2link/resources/tag2link_sources.xml	(revision 31226)
+++ /applications/editors/josm/plugins/tag2link/resources/tag2link_sources.xml	(revision 31227)
@@ -56,5 +56,5 @@
     <src name="Mapillary">
         <rule>
-            <condition k="((ref|source):)?mapillary" v="[0-9a-zA-Z]+" />
+            <condition k="((ref|source):)?mapillary" v="[0-9a-zA-Z-_]+" />
             <link name="View %name% image" href="http://www.mapillary.com/map/im/%v%" />
         </rule>