diff --git a/Tests/test_imagepalette.py b/Tests/test_imagepalette.py
index 2fcf6cffead..aa0882b3e0c 100644
--- a/Tests/test_imagepalette.py
+++ b/Tests/test_imagepalette.py
@@ -215,7 +215,9 @@ def test_rawmode_getdata() -> None:
 
     # Assert
     assert rawmode == "RGB"
-    assert data_in == data_out
+    assert data_out == bytes(data_in)
+    im = Image.new("P", (1, 1))
+    im.im.putpalette("RGB", rawmode, data_out)
 
 
 def test_2bit_palette(tmp_path: Path) -> None:
diff --git a/src/PIL/ImagePalette.py b/src/PIL/ImagePalette.py
index 6eff2eeeb72..80a44fa7f6c 100644
--- a/src/PIL/ImagePalette.py
+++ b/src/PIL/ImagePalette.py
@@ -97,7 +97,13 @@ def copy(self) -> ImagePalette:
 
         return new
 
-    def getdata(self) -> tuple[str, Sequence[int] | bytes | bytearray]:
+    def _tobytes(self) -> bytes:
+        if isinstance(self.palette, bytes):
+            return self.palette
+        arr = array.array("B", self.palette)
+        return arr.tobytes()
+
+    def getdata(self) -> tuple[str, bytes]:
         """
         Get palette contents in format suitable for the low-level
         ``im.putpalette`` primitive.
@@ -105,7 +111,7 @@ def getdata(self) -> tuple[str, Sequence[int] | bytes | bytearray]:
         .. warning:: This method is experimental.
         """
         if self.rawmode:
-            return self.rawmode, self.palette
+            return self.rawmode, self._tobytes()
         return self.mode, self.tobytes()
 
     def tobytes(self) -> bytes:
@@ -116,10 +122,7 @@ def tobytes(self) -> bytes:
         if self.rawmode:
             msg = "palette contains raw palette data"
             raise ValueError(msg)
-        if isinstance(self.palette, bytes):
-            return self.palette
-        arr = array.array("B", self.palette)
-        return arr.tobytes()
+        return self._tobytes()
 
     # Declare tostring as an alias for tobytes
     tostring = tobytes