diff --git a/pkgs/tools/typesetting/tex/auctex/default.nix b/pkgs/tools/typesetting/tex/auctex/default.nix
index fe053e41be1e..dc027b5c470e 100644
--- a/pkgs/tools/typesetting/tex/auctex/default.nix
+++ b/pkgs/tools/typesetting/tex/auctex/default.nix
@@ -17,7 +17,7 @@ let auctex = stdenv.mkDerivation ( rec {
   buildInputs = [
     emacs
     ghostscript
-    (texliveBasic.withPackages (ps: [ ps.hypdoc ]))
+    (texliveBasic.withPackages (ps: [ ps.etoolbox ps.hypdoc ]))
   ];
 
   preConfigure = ''