diff --git a/pkgs/os-specific/linux/ttysnoop/default.nix b/pkgs/os-specific/linux/ttysnoop/default.nix
index f2bf2bdd31b0..670c96083443 100644
--- a/pkgs/os-specific/linux/ttysnoop/default.nix
+++ b/pkgs/os-specific/linux/ttysnoop/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   meta = {
     inherit (s) version;
     description = "A tool to clone input and output of another tty/pty to the current one";
-    license = stdenv.lib.licenses.gpl ;
+    license = stdenv.lib.licenses.gpl2 ;
     maintainers = [stdenv.lib.maintainers.raskin];
     platforms = stdenv.lib.platforms.linux;
   };