1 files changed, 3 insertions, 2 deletions
diff --git a/dh-elpa.el b/dh-elpa.el
index bfac156..ded844f 100644
--- a/dh-elpa.el
+++ b/dh-elpa.el
@@ -73,8 +73,9 @@ namespace in Debian, plus Emacs itself."
 
 (defun dhelpa-filter-pkg-desc (desc)
   "Filter the dependencies of package description DESC for Debian."
-  (cl-callf dhelpa-filter-deps-for-debian (package-desc-reqs desc))
-  desc)
+  (let ((our-desc (copy-package-desc desc)))
+    (cl-callf dhelpa-filter-deps-for-debian (package-desc-reqs our-desc))
+    our-desc))
 
 (defun dhelpa-debianise-deps (deps)
   "Convert a list of package.el deps DEPS to debian/control format."