diff --git a/pkgs/applications/science/logic/coq/default.nix b/pkgs/applications/science/logic/coq/default.nix
index ed2abdd8341..8556e975de3 100644
--- a/pkgs/applications/science/logic/coq/default.nix
+++ b/pkgs/applications/science/logic/coq/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
     substituteInPlace tools/beautify-archive --replace "/bin/rm" "$RM"
     substituteInPlace scripts/coqmktop.ml --replace \
       "\"-I\"; \"+lablgtk2\"" \
-      "\"-I\"; \"${lablgtk}/lib/ocaml/lablgtk2\"; \"-I\"; \"${lablgtk}/lib/ocaml/stublibs\""
+      "\"-I\"; \"$(echo "${lablgtk}"/lib/ocaml/*/site-lib/lablgtk2)\"; \"-I\"; \"$(echo "${lablgtk}"/lib/ocaml/*/site-lib/stublibs)\""
   '';
 
   postInstall = ''