diff --git a/lib/query.py b/lib/query.py
index ae7332d893a92fd52c6207a2448b6d3e9f116711..15149b772b5d7ec84f161b7fa0d6b3b6104c72c4 100644
--- a/lib/query.py
+++ b/lib/query.py
@@ -1305,7 +1305,7 @@ def _BuildNodeFields():
                  constants.NR_REGULAR, constants.NR_DRAINED,
                  constants.NR_OFFLINE)
   role_doc = ("Node role; \"%s\" for master, \"%s\" for master candidate,"
-              " \"%s\" for regular, \"%s\" for a drained, \"%s\" for offline" %
+              " \"%s\" for regular, \"%s\" for drained, \"%s\" for offline" %
               role_values)
   fields.append((_MakeField("role", "Role", QFT_TEXT, role_doc), NQ_CONFIG, 0,
                  lambda ctx, node: _GetNodeRole(node, ctx.master_name)))