diff --git a/pkgs/applications/science/math/ecm/default.nix b/pkgs/applications/science/math/ecm/default.nix
index 535ec8d18a40..5d378a48dd9e 100644
--- a/pkgs/applications/science/math/ecm/default.nix
+++ b/pkgs/applications/science/math/ecm/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Elliptic Curve Method for Integer Factorization";
-    license = stdenv.lib.licenses.gpl2plus;
+    license = stdenv.lib.licenses.gpl2Plus;
     homepage = http://ecm.gforge.inria.fr/;
     maintainers = [ stdenv.lib.maintainers.roconnor ];
   };