diff --git a/pkgs/desktops/kde-5/plasma/breeze-gtk.nix b/pkgs/desktops/kde-5/plasma/breeze-gtk.nix
index 664387de1707..57de2fa2d474 100644
--- a/pkgs/desktops/kde-5/plasma/breeze-gtk.nix
+++ b/pkgs/desktops/kde-5/plasma/breeze-gtk.nix
@@ -5,4 +5,5 @@
 plasmaPackage {
   name = "breeze-gtk";
   nativeBuildInputs = [ ecm ];
+  cmakeFlags = [ "-DWITH_GTK3_VERSION=3.20" ];
 }