diff --git a/nix/overlays/calibre-no-mime.nix b/nix/overlays/calibre-no-mime.nix
index 2a006f68..f6436085 100644
--- a/nix/overlays/calibre-no-mime.nix
+++ b/nix/overlays/calibre-no-mime.nix
@@ -1,8 +1,11 @@
 # cailbre is obnoxious about opening HTML
-_: prev: {
-  calibre = prev.calibre.overrideAttrs (oldAttrs: {
-    postInstall = ''
+final: prev: {
+  calibre = final.symlinkJoin {
+    name = "calibre";
+    paths = [prev.calibre];
+    buildInputs = [final.makeWrapper];
+    postBuild = ''
       rm -r $out/share/mime
     '';
-  });
+  };
 }