diff --git a/impls/lib/pprint.mal b/impls/lib/pprint.mal
index c5be941c..73efde77 100644
--- a/impls/lib/pprint.mal
+++ b/impls/lib/pprint.mal
@@ -28,7 +28,7 @@
                                       (pp- k kindent)
                                       " "
                                       (pp- (get obj k) vindent)))
-                        (rest (keys obj))))))
+                        (rest ks)))))
 
     pp- (fn* [obj indent]
       (cond