diff --git a/modules/radix/packages/toys.scm b/modules/radix/packages/toys.scm
index 872cf46..e08049c 100644
--- a/modules/radix/packages/toys.scm
+++ b/modules/radix/packages/toys.scm
@@ -26,7 +26,7 @@
     (arguments
       (list #:make-flags
             #~(list (string-append "CC=" #$(cc-for-target))
-                    (string-append "DESTDIR=" (assoc-ref %outputs "out")))
+                    (string-append "PREFIX=" #$output))
             #:phases
             #~(modify-phases %standard-phases
                 (delete 'configure)