diff --git a/pkgs/os-specific/linux/iomelt/default.nix b/pkgs/os-specific/linux/iomelt/default.nix
index f57cfd713fb..932b8143898 100644
--- a/pkgs/os-specific/linux/iomelt/default.nix
+++ b/pkgs/os-specific/linux/iomelt/default.nix
@@ -20,6 +20,7 @@ in stdenv.mkDerivation {
     description = "A simple yet effective way to benchmark disk IO in Linux systems";
     homepage    = http://www.iomelt.com;
     maintainers = with maintainers; [ cstrahan ];
+    license = licenses.artistic2;
     platforms   = platforms.linux;
   };
 }