diff --git a/core/sequences/sequences.factor b/core/sequences/sequences.factor
index 55d4bc9be9..17dbcf5c3c 100755
--- a/core/sequences/sequences.factor
+++ b/core/sequences/sequences.factor
@@ -927,7 +927,7 @@ USE: arrays
 : array-flip ( matrix -- newmatrix )
     { array } declare
     [ dup first array-length [ array-length min ] reduce ] keep
-    [ [ array-nth ] with { } map-as ] curry { } map-as ;
+    [ [ { array } declare array-nth ] with { } map-as ] curry { } map-as ;
 
 PRIVATE>