diff --git a/pkgs/applications/networking/irc/sic/default.nix b/pkgs/applications/networking/irc/sic/default.nix
index 7c13b04e670..6f48f44214c 100644
--- a/pkgs/applications/networking/irc/sic/default.nix
+++ b/pkgs/applications/networking/irc/sic/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "sic-${version}";
   version = "1.2";
 
-  makeFlags = "PREFIX=$out";
+  makeFlags = "PREFIX=$(out)";
   src = fetchurl {
     url = "http://dl.suckless.org/tools/sic-${version}.tar.gz";
     sha256 = "ac07f905995e13ba2c43912d7a035fbbe78a628d7ba1c256f4ca1372fb565185";