diff --git a/gnu/packages/chemistry.scm b/gnu/packages/chemistry.scm
index 418b4be2f4..2d7cb7aad1 100644
--- a/gnu/packages/chemistry.scm
+++ b/gnu/packages/chemistry.scm
@@ -21,6 +21,7 @@ (define-module (gnu packages chemistry)
   #:use-module (guix packages)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix download)
+  #:use-module (gnu packages)
   #:use-module (gnu packages algebra)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages gv)