diff --git a/modules/nixos/homeassistant/services/esphome/default.nix b/modules/nixos/homeassistant/services/esphome/default.nix
index 9d095af..4cf899a 100644
--- a/modules/nixos/homeassistant/services/esphome/default.nix
+++ b/modules/nixos/homeassistant/services/esphome/default.nix
@@ -9,11 +9,12 @@ with lib;
 let
   cfg = config.${namespace}.services.home-assistant;
 
-  # ESPHome with littlefs-python added to PYTHONPATH so PlatformIO's
-  # espressif32 platform builder can import it (needed for LittleFS support).
+  # ESPHome with littlefs-python and pyfatfs added to PYTHONPATH so PlatformIO's
+  # espressif32 platform builder can import them (needed for LittleFS/FAT support).
   esphomeWithLittlefs = pkgs.esphome.overridePythonAttrs (oldAttrs: {
     makeWrapperArgs = (oldAttrs.makeWrapperArgs or [ ]) ++ [
-      "--prefix PYTHONPATH : ${pkgs.python3Packages.pyfatfs}/${pkgs.${namespace}.littlefs-python}/${pkgs.python3.sitePackages}"
+      "--prefix PYTHONPATH : ${pkgs.${namespace}.littlefs-python}/${pkgs.python3.sitePackages}"
+      "--prefix PYTHONPATH : ${pkgs.python3Packages.pyfatfs}/${pkgs.python3.sitePackages}"
     ];
   });
 in