diff --git a/LTA/LTAIngest/LTAIngestCommon/job.py b/LTA/LTAIngest/LTAIngestCommon/job.py
index de37a959340013ceaa32d5c2f58c5e77bba49afa..39862077a1aa73709e32d8bb6089fdc6adcb58ff 100755
--- a/LTA/LTAIngest/LTAIngestCommon/job.py
+++ b/LTA/LTAIngest/LTAIngestCommon/job.py
@@ -197,7 +197,7 @@ def createJobXml(project_name, obs_id, dataproduct_name, archive_id, location, m
         xml += '\n    <input name="TMSSIngestSubtaskId">%s</input>' % tmss_ingest_subtask_id
         xml += '\n    <input name="Type">TMSS</input>'
         if tmss_input_dataproduct_id is None:
-            raise ValueError("createJobXml: please a tmss_dataproduct_id for TMSS ingest jobs")
+            raise ValueError("createJobXml: please add a tmss_dataproduct_id for TMSS ingest jobs")
         xml += '\n    <input name="TMSSInputDataproductId">%s</input>' % tmss_input_dataproduct_id
 
     if submitter: