diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 4b988ef524a8..f1355c2a208b 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -95,6 +95,7 @@ let
                || result.system == "x86_64-linux"
                || result.system == "powerpc-linux"
                || result.system == "armv5tel-linux";
+        isSunOS = result.system == "i386-sunos";
         isi686 = result.system == "i686-linux"
                || result.system == "i686-darwin"
                || result.system == "i686-freebsd"