diff --git a/core/hash-sets/hash-sets.factor b/core/hash-sets/hash-sets.factor
index 6a03bd02d9..44de159a61 100644
--- a/core/hash-sets/hash-sets.factor
+++ b/core/hash-sets/hash-sets.factor
@@ -9,9 +9,7 @@ IN: hash-sets
 TUPLE: hash-set { table hashtable read-only } ;
 
 : <hash-set> ( members -- hash-set )
-    dup length <hashtable> [
-        [ dupd set-at ] curry each
-    ] keep hash-set boa ;
+    unique hash-set boa ; inline
 
 INSTANCE: hash-set set
 M: hash-set in? table>> key? ; inline