diff --git a/opensrp-chw/src/main/assets/ec_client_fields.json b/opensrp-chw/src/main/assets/ec_client_fields.json
index ebae1702f7..87daed8fad 100644
--- a/opensrp-chw/src/main/assets/ec_client_fields.json
+++ b/opensrp-chw/src/main/assets/ec_client_fields.json
@@ -594,7 +594,7 @@
           "type": "Event",
           "json_mapping": {
             "field": "obs.fieldCode",
-            "concept": "1438AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+            "concept": "no_prev_preg"
           }
         },
         {