diff --git a/nixos/tests/web-apps/immich.nix b/nixos/tests/web-apps/immich.nix
index e9b3c38961fd..fddc681620f1 100644
--- a/nixos/tests/web-apps/immich.nix
+++ b/nixos/tests/web-apps/immich.nix
@@ -27,6 +27,12 @@
           notifications.smtp.transport.password = "/etc/shadow";
         };
       };
+
+      # licensed under  CC0 1.0: https://github.com/NixOS/nixpkgs/issues/450972#issuecomment-3393545531
+      environment.etc.photos.source = pkgs.fetchzip {
+        url = "https://github.com/user-attachments/files/22865871/IMGP5923.zip";
+        hash = "sha256-ux0IG1qCB1s8GKsZp9R0rvwEZxeXm5FnuS9kYstKVmo=";
+      };
     };
 
   testScript = ''
@@ -57,6 +63,13 @@
     res = machine.succeed("immich server-info")
     print(res)
 
+    with subtest("Test thumbnail generation from PEF format"):
+      res = machine.succeed("immich upload --json-output /etc/photos/IMGP5923.PEF | tail -n +4")
+      asset_id = json.loads(res)["newAssets"][0]["id"]
+      machine.wait_until_succeeds(f"""
+        curl -fI -X GET -H 'Cookie: immich_access_token={token}' http://localhost:2283/api/assets/{asset_id}/thumbnail
+      """)
+
     machine.succeed("""
       curl -f -X PUT -H 'Cookie: immich_access_token=%s' --json '{ "command": "start" }' http://localhost:2283/api/jobs/backupDatabase
     """ % token)
diff --git a/pkgs/by-name/im/immich/package.nix b/pkgs/by-name/im/immich/package.nix
index 0c002e42fbf4..5bf139509ae9 100644
--- a/pkgs/by-name/im/immich/package.nix
+++ b/pkgs/by-name/im/immich/package.nix
@@ -146,6 +146,12 @@ let
       runHook postInstall
     '';
   };
+
+  # Without this thumbnail generation for raw photos fails with
+  #     Error: Input file has corrupt header: tiff2vips: samples_per_pixel not a whole number of bytes
+  vips' = vips.overrideAttrs (prev: {
+    mesonFlags = prev.mesonFlags ++ [ "-Dtiff=disabled" ];
+  });
 in
 stdenv.mkDerivation {
   pname = "immich";
@@ -182,7 +188,7 @@ stdenv.mkDerivation {
     pango
     pixman
     # Required for sharp
-    vips
+    vips'
   ];
 
   env.SHARP_FORCE_GLOBAL_LIBVIPS = 1;