diff --git a/pkgs/development/python-modules/iocapture/default.nix b/pkgs/development/python-modules/iocapture/default.nix
index d1c01b4f653..1e333d923a0 100644
--- a/pkgs/development/python-modules/iocapture/default.nix
+++ b/pkgs/development/python-modules/iocapture/default.nix
@@ -29,6 +29,6 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Capture stdout, stderr easily.";
     homepage = https://github.com/oinume/iocapture;
-    license = licenses.MIT;
+    license = licenses.mit;
   };
-}
\ No newline at end of file
+}