diff --git a/Rom.py b/Rom.py
index 7ba8b6a1..91b34682 100644
--- a/Rom.py
+++ b/Rom.py
@@ -1501,10 +1501,12 @@ def apply_rom_settings(rom, beep, color, quickswap, fastmenu, disable_music, spr
         if any(options.values()):
             ColorF = z3pr.ColorF
 
+            data_dir = local_path("data") if is_bundled() else None
+
             def next_color():
                 return ColorF(local_random.random(), local_random.random(), local_random.random())
 
-            z3pr.randomize(rom.buffer, "maseya", next_color, options)
+            z3pr.randomize(rom.buffer, "maseya", next_color, options, data_dir)
     else:
         logging.warning("Could not find z3pr palette shuffle. "
                         "If you want improved palette shuffling please install the maseya-z3pr package.")
diff --git a/setup.py b/setup.py
index 2281a7d3..9240f1a7 100644
--- a/setup.py
+++ b/setup.py
@@ -113,6 +113,16 @@ for data in extra_data:
 os.makedirs(buildfolder / "Players", exist_ok=True)
 shutil.copyfile("playerSettings.yaml", buildfolder / "Players" / "playerSettings.yaml")
 
+try:
+    from maseya import z3pr
+except ImportError:
+    print("Maseya Palette Shuffle not found, skipping data files.")
+else:
+    # maseya Palette Shuffle exists and needs its data files
+    print("Maseya Palette Shuffle found, including data files...")
+    file = z3pr.__file__
+    installfile(Path(os.path.dirname(file)) / "data", keep_content=True)
+
 qusb2sneslog = buildfolder / "QUsb2Snes" / "log.txt"
 if os.path.exists(qusb2sneslog):
     os.remove(qusb2sneslog)
@@ -120,7 +130,7 @@ if os.path.exists(qusb2sneslog):
 if signtool:
     for exe in exes:
         print(f"Signing {exe.targetName}")
-        os.system(signtool+exe.targetName)
+        os.system(signtool + exe.targetName)
 
 
 manifest_creation()