diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 9e88ad9398..30ddbf9d1b 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -100,6 +100,7 @@
   #:use-module (gnu packages digest)
   #:use-module (gnu packages docbook)
   #:use-module (gnu packages documentation)
+  #:use-module (gnu packages emacs-build)
   #:use-module (gnu packages emacs-xyz)
   #:use-module (gnu packages file)
   #:use-module (gnu packages flex)