diff --git a/modules/radix/utils.scm b/modules/radix/utils.scm
index 9b2acd5..5407ad4 100644
--- a/modules/radix/utils.scm
+++ b/modules/radix/utils.scm
@@ -1,6 +1,7 @@
 (define-module (radix utils)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-26)
+  #:use-module (ice-9 match)
   #:export (associate-left
             associate-right
             flatmap))