diff --git a/admin/searchengine/elasticsearch/field_config.yaml b/admin/searchengine/elasticsearch/field_config.yaml
index 8723a0713c..82793ff421 100644
--- a/admin/searchengine/elasticsearch/field_config.yaml
+++ b/admin/searchengine/elasticsearch/field_config.yaml
@@ -24,6 +24,7 @@ search:
   integer:
     type: integer
     null_value: 0
+    ignore_malformed: true
   stdno:
     type: text
     analyzer: analyzer_stdno