diff --git a/pkgs/development/compilers/gcl/default.nix b/pkgs/development/compilers/gcl/default.nix
index 25b1599fbea..1cbae9b81f5 100644
--- a/pkgs/development/compilers/gcl/default.nix
+++ b/pkgs/development/compilers/gcl/default.nix
@@ -16,6 +16,11 @@ stdenv.mkDerivation rec {
     url = "http://gnu.spinellicreations.com/gcl/${name}.tar.gz";
   };
 
+  patches = [(fetchurl {
+    url = https://gitweb.gentoo.org/repo/gentoo.git/plain/dev-lisp/gcl/files/gcl-2.6.12-gcc5.patch;
+    sha256 = "00jbsn0qp8ki2w7dx8caha7g2hr9076xa6bg48j3qqqncff93zdh";
+  })];
+
   buildInputs = [
     mpfr m4 binutils emacs gmp
     libX11 xproto inputproto libXi