diff --git a/src/calibre/ebooks/lrf/html/table_as_image.py b/src/calibre/ebooks/lrf/html/table_as_image.py
index 4c5a79eab8..f4bdfa973d 100644
--- a/src/calibre/ebooks/lrf/html/table_as_image.py
+++ b/src/calibre/ebooks/lrf/html/table_as_image.py
@@ -46,9 +46,11 @@ class HTMLTableRenderer(QObject):
painter = QPainter(image)
self.page.mainFrame().render(painter)
painter.end()
+ cheight = image.height()
+ cwidth = image.width()
pos = 0
while pos < cheight:
- img = image.copy(0, pos, cwidth, cutoff_height)
+ img = image.copy(0, pos, cwidth, min(cheight-pos, cutoff_height))
pos += cutoff_height-20
if cwidth > self.width:
img = img.scaledToWidth(self.width, Qt.SmoothTransform)
@@ -70,7 +72,7 @@ def render_table(server, soup, table, css, base_dir, width, height, dpi, factor=
%s
-
+