diff --git a/src/plugins/streamers/oasis/db_plugin/dbOASISWriter.cc b/src/plugins/streamers/oasis/db_plugin/dbOASISWriter.cc
index 6d721f182..7985ba111 100644
--- a/src/plugins/streamers/oasis/db_plugin/dbOASISWriter.cc
+++ b/src/plugins/streamers/oasis/db_plugin/dbOASISWriter.cc
@@ -2964,7 +2964,7 @@ OASISWriter::write (const db::Path &path, db::properties_id_type prop_id, const
 }
 
 void 
-OASISWriter::write (const db::Edge &edge, db::properties_id_type prop_id, const db::Repetition & /*rep*/)
+OASISWriter::write (const db::Edge &edge, db::properties_id_type prop_id, const db::Repetition &rep)
 {
   m_progress.set (mp_stream->pos ());
 
@@ -2980,6 +2980,9 @@ OASISWriter::write (const db::Edge &edge, db::properties_id_type prop_id, const
   if (mm_datatype != m_datatype) {
     info |= 0x02;
   }
+  if (! rep.is_singular ()) {
+    info |= 0x04;
+  }
   if (mm_geometry_x != edge.p1 ().x ()) {
     info |= 0x10;
   }
@@ -3030,6 +3033,9 @@ OASISWriter::write (const db::Edge &edge, db::properties_id_type prop_id, const
     mm_geometry_y = edge.p1 ().y ();
     write_coord (edge.p1 ().y ());
   }
+  if (info & 0x04) {
+    write (rep);
+  }
 
   if (prop_id != 0) {
     write_props (prop_id);