diff --git a/modules/radix/home/services/zathura.scm b/modules/radix/home/services/zathura.scm
index 641ad9f..6c3657a 100644
--- a/modules/radix/home/services/zathura.scm
+++ b/modules/radix/home/services/zathura.scm
@@ -1,5 +1,6 @@
 (define-module (radix home services zathura)
   #:use-module (ice-9 match)
+  #:use-module (ice-9 format)
   #:use-module (guix records)
   #:use-module (gnu home services)
   #:use-module (gnu services configuration)