diff --git a/modules/homeassistant/hacs/mail-and-packages.nix b/modules/homeassistant/hacs/mail-and-packages.nix
index 497f804..c445387 100644
--- a/modules/homeassistant/hacs/mail-and-packages.nix
+++ b/modules/homeassistant/hacs/mail-and-packages.nix
@@ -18,6 +18,12 @@ let
       pillow
     ];
 
+    postPatch = ''
+      substituteInPlace custom_components/mail_and_packages/const.py \
+        --replace 'DEFAULT_PATH = "/var/lib/homeassistant/images/"' 'DEFAULT_PATH = "/var/lib/homeassistant/images/"'
+        --replace 'DEFAULT_CUSTOM_IMG_FILE = "/var/lib/homeassistant/mail_none.gif"' 'DEFAULT_CUSTOM_IMG_FILE = "/var/lib/homeassistant/mail_none.gif"'
+    '';
+
     meta = {
       changelog = "https://github.com/moralmunky/Home-Assistant-Mail-And-Packages/releases/tag/${version}";
       description = "The Mail and Packages integration creates sensors for supported shippers to show a snapshot of mail and packages that are scheduled to be delivered the current day.";