diff --git a/pkgs/applications/kde/ark/default.nix b/pkgs/applications/kde/ark/default.nix
index b708cb1bd590..f6dd70682742 100644
--- a/pkgs/applications/kde/ark/default.nix
+++ b/pkgs/applications/kde/ark/default.nix
@@ -3,13 +3,13 @@
 , kiconthemes, kitemmodels, khtml, kio, kparts, kpty, kservice, kwidgetsaddons
 , libarchive, libzip
 # Archive tools
-, p7zip, lrzip
+, p7zip, lrzip, unar
 # Unfree tools
 , unfreeEnableUnrar ? false, unrar
 }:
 
 let
-  extraTools = [ p7zip lrzip ] ++ lib.optional unfreeEnableUnrar unrar;
+  extraTools = [ p7zip lrzip unar ] ++ lib.optional unfreeEnableUnrar unrar;
 in
 
 mkDerivation {