diff --git a/bibliotheca/config/main/2010.json b/bibliotheca/config/main/2010.json
index ab566d0..6f1713f 100644
--- a/bibliotheca/config/main/2010.json
+++ b/bibliotheca/config/main/2010.json
@@ -26,7 +26,7 @@
       "mode": "row-based"
     },
     "baseColumnName": "M|ISSN",
-    "expression": "grel:value.replace('-','')",
+    "expression": "grel:value",
     "onError": "set-to-blank",
     "newColumnName": "2010",
     "columnInsertIndex": 3