diff --git a/pkgs/by-name/tw/twurl/package.nix b/pkgs/by-name/tw/twurl/package.nix
index 2587d6f0b2c0..dbaa518bd2cf 100644
--- a/pkgs/by-name/tw/twurl/package.nix
+++ b/pkgs/by-name/tw/twurl/package.nix
@@ -14,7 +14,7 @@ bundlerApp {
   meta = with lib; {
     description = "OAuth-enabled curl for the Twitter API";
     homepage = "https://github.com/twitter/twurl";
-    license = "MIT";
+    license = lib.licenses.mit;
     maintainers = with maintainers; [ brecht ];
     platforms = platforms.unix;
     mainProgram = "twurl";