diff --git a/src/PIL/PdfImagePlugin.py b/src/PIL/PdfImagePlugin.py
index fb3bac2ee..07f67d465 100644
--- a/src/PIL/PdfImagePlugin.py
+++ b/src/PIL/PdfImagePlugin.py
@@ -162,7 +162,6 @@ def _save(im, fp, filename, save_all=False):
             elif im.mode == "LA":
                 filter = "JPXDecode"
                 # params = f"<< /Predictor 15 /Columns {width-2} >>"
-                colorspace = PdfParser.PdfName("DeviceGray")
                 procset = "ImageB"  # grayscale
                 dict_obj["SMaskInData"] = 1
             elif im.mode == "P":