diff --git a/core/sets/sets-docs.factor b/core/sets/sets-docs.factor
index 33c7e6a27a..220de91942 100644
--- a/core/sets/sets-docs.factor
+++ b/core/sets/sets-docs.factor
@@ -192,5 +192,5 @@ HELP: cardinality
 { $description "Returns the number of elements in the set. All sets support this operation." } ;
 
 HELP: combine
-{ $values { "seq" "a sequence of sets" } { "set" set } }
+{ $values { "sets" "a sequence of sets" } { "set" set } }
 { $description "Outputs the union of a sequence of sets, or " { $link f } " if the sequence is empty." } ;