diff --git a/pkgs/development/compilers/yap/default.nix b/pkgs/development/compilers/yap/default.nix
index 8e37dc76441b..d93da8cb9965 100644
--- a/pkgs/development/compilers/yap/default.nix
+++ b/pkgs/development/compilers/yap/default.nix
@@ -13,6 +13,8 @@ stdenv.mkDerivation rec {
 
   configureFlags = "--enable-tabling=yes";
 
+  NIX_CFLAGS_COMPILE = [ "-fpermissive" ];
+
   meta = {
     homepage = http://www.dcc.fc.up.pt/~vsc/Yap/;
     description = "A ISO-compatible high-performance Prolog compiler";