diff --git a/debian/control b/debian/control
index 0029c81..08bdb03 100644
--- a/debian/control
+++ b/debian/control
@@ -18,7 +18,6 @@
          ${misc:Depends}
 Recommends: emacs (>= 46.0)
 Enhances: emacs
-Built-Using: ${misc:Built-Using}
 Description: simple asynchronous functions for Emacs Lisp
  It is a simple library for asynchronous tasks.
  .
@@ -32,7 +31,6 @@
          elpa-deferred (= ${binary:Version})
 Recommends: emacs (>= 46.0)
 Enhances: emacs
-Built-Using: ${misc:Built-Using}
 Description: higher level library for concurrent tasks
  It is a higher level library for concurrent tasks based on deferred.el. This
  library has following features: