diff --git a/pkgs/kde/plasma/discover/default.nix b/pkgs/kde/plasma/discover/default.nix
index 2795f3d1414e..d25a4fc6ea9b 100644
--- a/pkgs/kde/plasma/discover/default.nix
+++ b/pkgs/kde/plasma/discover/default.nix
@@ -11,4 +11,8 @@ mkKdeDerivation {
 
   extraNativeBuildInputs = [pkg-config];
   extraBuildInputs = [qtwebview discount flatpak fwupd];
+
+  # The PackageKit backend doesn't work for us and causes Discover
+  # to freak out when loading. Disable it to not confuse users.
+  excludeDependencies = ["packagekit-qt"];
 }