diff --git a/pkgs/applications/office/ledger/3.0.nix b/pkgs/applications/office/ledger/3.0.nix
index 44cf87b7929..21f77ea1ea4 100644
--- a/pkgs/applications/office/ledger/3.0.nix
+++ b/pkgs/applications/office/ledger/3.0.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   # broken in ledger...
   postInstall = ''
     mkdir -p $out/share/emacs/site-lisp/
-    cp -v $src/lisp/*.el $out/share/emacs/site-lisp/
+    cp -v "$src/lisp/"*.el $out/share/emacs/site-lisp/
   '';
 
   meta = {