diff --git a/pkgs/kde/gear/khelpcenter/default.nix b/pkgs/kde/gear/khelpcenter/default.nix
index e69cd63a7d53..795ec3b4aeb3 100644
--- a/pkgs/kde/gear/khelpcenter/default.nix
+++ b/pkgs/kde/gear/khelpcenter/default.nix
@@ -5,6 +5,7 @@
   xapian,
   man-db,
   python3,
+  kio-extras,
 }:
 mkKdeDerivation {
   pname = "khelpcenter";
@@ -13,6 +14,7 @@ mkKdeDerivation {
     qtwebengine
     xapian
     python3
+    kio-extras
   ];
   patches = [
     (replaceVars ./use_nix_paths_for_mansearch_utilities.patch {