diff --git a/pkgs/icon-update/default.nix b/pkgs/icon-update/default.nix
index caccb2cf5..1319b7fb1 100644
--- a/pkgs/icon-update/default.nix
+++ b/pkgs/icon-update/default.nix
@@ -12,7 +12,8 @@ pkgs.writeShellApplication {
   };
 
   text = ''
-    OUT_DIR=$(realpath ../webview-ui/app/icons)
+    OUT_DIR="$(realpath ../webview-ui/app/icons)"
+    export OUT_DIR
     deno run --allow-all ${src}/main.ts
   '';
 }