diff --git a/core/hashtables/hashtables.factor b/core/hashtables/hashtables.factor
index 7d8c6f0b5f..1fabc1aab7 100755
--- a/core/hashtables/hashtables.factor
+++ b/core/hashtables/hashtables.factor
@@ -95,11 +95,12 @@ IN: hashtables
     [ swap pick (set-hash) drop f ] find-pair 2drop 2drop ;
 
 : hash-large? ( hash -- ? )
-    dup hash-count 3 fixnum*fast
-    swap hash-array array-capacity > ;
+    [ hash-count 3 fixnum*fast  ]
+    [ hash-array array-capacity ] bi > ;
 
 : hash-stale? ( hash -- ? )
-    dup hash-deleted 10 fixnum*fast swap hash-count fixnum> ;
+    [ hash-deleted 10 fixnum*fast ]
+    [ hash-count                  ] bi fixnum> ;
 
 : grow-hash ( hash -- )
     [ dup hash-array swap assoc-size 1+ ] keep
@@ -183,10 +184,13 @@ M: hashtable assoc-like
     [ 3drop ] [ dupd dupd set-at swap push ] if ; inline
 
 : prune ( seq -- newseq )
-    dup length <hashtable> over length <vector>
-    rot [ >r 2dup r> (prune) ] each nip ;
+    [ length <hashtable> ]
+    [ length <vector>    ]
+    [                    ] tri
+    [ >r 2dup r> (prune) ] each nip ;
 
 : all-unique? ( seq -- ? )
-    dup prune [ length ] 2apply = ;
+    [ length       ]
+    [ prune length ] bi = ;
 
 INSTANCE: hashtable assoc