diff --git a/pkgs/development/compilers/mono/default.nix b/pkgs/development/compilers/mono/default.nix
index a7a4d8da4edc..4de1bd1e301b 100644
--- a/pkgs/development/compilers/mono/default.nix
+++ b/pkgs/development/compilers/mono/default.nix
@@ -63,6 +63,11 @@ stdenv.mkDerivation rec {
   postInstall = ''
     echo "Updating Mono key store"
     $out/bin/cert-sync ${cacert}/etc/ssl/certs/ca-bundle.crt
+  ''
+  # According to [1], gmcs is just mcs
+  # [1] https://github.com/mono/mono/blob/master/scripts/gmcs.in
+  + ''
+    ln -s $out/bin/mcs $out/bin/gmcs
   '';
 
   meta = {