diff --git a/glue/ligolw/dbtables.py b/glue/ligolw/dbtables.py
index <HASH>..<HASH> 100644
--- a/glue/ligolw/dbtables.py
+++ b/glue/ligolw/dbtables.py
@@ -494,9 +494,9 @@ class SearchSummaryTable(DBTable):
 		for row in self:
 			if process_ids is None or row.process_id in process_ids:
 				if "," in row.ifos:
-					ifos = row.ifos.split(",")
+					ifos = map(str.strip, row.ifos.split(","))
 				elif "+" in row.ifos:
-					ifos = row.ifos.split("+")
+					ifos = map(str.strip, row.ifos.split("+"))
 				else:
 					ifos = [row.ifos]
 				seglists |= segments.segmentlistdict([(ifo, segments.segmentlist([row.get_out()])) for ifo in ifos])
In SearchSummaryTable.get_out_segmentlistdict(), strip white space from the
start and stop of comma- and plus-delimited instrument names.