diff --git a/python/obitools3/commands/ecotag.pyx b/python/obitools3/commands/ecotag.pyx
index 4c747ab..a66ea0a 100755
--- a/python/obitools3/commands/ecotag.pyx
+++ b/python/obitools3/commands/ecotag.pyx
@@ -48,7 +48,7 @@ def addOptions(parser):
                       type=float,
                       help="Minimum identity considered for the assignment circle "
                            "(sequence is assigned to the LCA of all sequences within a similarity circle of the best matches; "
-                           "the threshold for this circle is the highest value between <CIRCLE_THRESHOLD> and the best assignment score found). "
+                           "the threshold for this circle is the highest value between <CIRCLE_THRESHOLD> and the best assignment score found for the query sequence). "
                            "Give value as a normalized identity, e.g. 0.95 for an identity of 95%%. "
                            "Default: 0.99.")