diff --git a/plakativ.py b/plakativ.py
index b63568f..67332c4 100755
--- a/plakativ.py
+++ b/plakativ.py
@@ -338,12 +338,18 @@ class Plakativ:
         mat_0 = fitz.Matrix(zoom, zoom)
         # since pymupdf 1.19.0 a warning will be issued if the deprecated names are used
         if hasattr(self.doc[self.pagenr], "get_displaylist"):
-            gdl = self.doc[self.pagenr].get_displaylist
+            gdl = self.doc[self.pagenr].get_displaylist()
         else:
-            gdl = self.doc[self.pagenr].getDisplayList
-        pix = gdl().getPixmap(matrix=mat_0, alpha=False)
-        # the getImageData() function was only introduced in pymupdf 1.14.5
+            gdl = self.doc[self.pagenr].getDisplayList()
+        if hasattr(gdl, "get_pixmap"):
+            pix = gdl.get_pixmap(matrix=mat_0, alpha=False)
+        else:
+            pix = gdl.getPixmap(matrix=mat_0, alpha=False)
+        if hasattr(pix, "tobytes"):
+            # getImageData was deprecated in pymupdf 1.19.0
+            return pix.tobytes("ppm")
         if hasattr(pix, "getImageData"):
+            # the getImageData() function was only introduced in pymupdf 1.14.5
             return pix.getImageData("ppm")
         else:
             # this is essentially the same thing that the getImageData()