diff --git a/pkgs/kde/misc/kdiagram/default.nix b/pkgs/kde/misc/kdiagram/default.nix
index f396db7a3378..f5d6d9d8bc58 100644
--- a/pkgs/kde/misc/kdiagram/default.nix
+++ b/pkgs/kde/misc/kdiagram/default.nix
@@ -16,5 +16,5 @@ mkKdeDerivation rec {
 
   extraNativeBuildInputs = [qttools qtsvg];
 
-  meta.license = [lib.licenses.gpl2];
+  meta.license = [lib.licenses.gpl2Only];
 }