diff --git a/dmbcs/development/packages/mcron.scm b/dmbcs/development/packages/mcron.scm
index 87b7172..3715d90 100644
--- a/dmbcs/development/packages/mcron.scm
+++ b/dmbcs/development/packages/mcron.scm
@@ -19,6 +19,7 @@
 ;;; along with GNU Mcron.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module  (dmbcs development packages mcron)
+  #:use-module (dmbcs development packages guile)
   #:use-module (ice-9 popen)
   #:use-module (ice-9 rdelim)
   #:use-module (gnu)