diff --git a/cope2n-api/fwd_api/models/SubscriptionRequestFile.py b/cope2n-api/fwd_api/models/SubscriptionRequestFile.py
index 1dce06d..89c5e31 100755
--- a/cope2n-api/fwd_api/models/SubscriptionRequestFile.py
+++ b/cope2n-api/fwd_api/models/SubscriptionRequestFile.py
@@ -23,7 +23,7 @@ class SubscriptionRequestFile(models.Model):
     doc_type = models.CharField(max_length=10, default="")
     index_in_request = models.IntegerField(default=0) # by doc_type
     processing_time = models.FloatField(default=-1) # in milisecond
-    reason = models.TextField(blank=True)
+    reason = models.TextField(blank=True, db_index=True) 
     counter_measures = models.TextField(blank=True)
     is_reviewed = models.BooleanField(default=False)
     is_required = models.BooleanField(default=True)