diff --git a/pkgs/development/libraries/libesmtp/default.nix b/pkgs/development/libraries/libesmtp/default.nix
index 49e202f2844..980cee2e687 100644
--- a/pkgs/development/libraries/libesmtp/default.nix
+++ b/pkgs/development/libraries/libesmtp/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     homepage = http://brianstafford.info/libesmtp/index.html;
     description = "A Library for Posting Electronic Mail";
-    license = licenses.gpl3;
+    license = licenses.lgpl21;
   };
 }