diff --git a/shared/home/default.nix b/shared/home/default.nix
index da6a9db..3b19c76 100644
--- a/shared/home/default.nix
+++ b/shared/home/default.nix
@@ -206,12 +206,16 @@ in {
           set-option -g default-terminal "screen-256color"
           set-option -sa terminal-features ',xterm-256color:RGB'
 
-          run-shell ${pkgs.writeShellScript "urlview" ''
-            tmux bind-key u capture-pane -J \\\; \
-              save-buffer "''${TMPDIR:-/tmp}/tmux-buffer" \\\; \
-              delete-buffer \\\; \
-              split-window -l 10 "${pkgs.extract_url}/bin/extract_url -c ${pkgs.writeText "urlviewrc" "COMMAND firefox"} ''${TMPDIR:-/tmp}/tmux-buffer"
-          ''}
+          run-shell ${let
+            cmd = "${pkgs.extract_url}/bin/extract_url";
+            cfg = pkgs.writeText "urlviewrc" "COMMAND firefox";
+          in
+            pkgs.writeShellScript "urlview" ''
+              tmux bind-key u capture-pane -J \\\; \
+                save-buffer "''${TMPDIR:-/tmp}/tmux-buffer" \\\; \
+                delete-buffer \\\; \
+                split-window -l 10 "${cmd} -c ${cfg} ''${TMPDIR:-/tmp}/tmux-buffer"
+            ''}
         '';
       };
     }