--- a/scantpaper/tests/test_7_canvas.py
+++ b/scantpaper/tests/test_7_canvas.py
@@ -1936,8 +1936,8 @@
     "num_words,max_time_ms",
     [
         (100, 100),  # Small page: should be very fast
-        (500, 300),  # Typical A4 page: ~35ms expected, allow 150ms headroom
-        (1000, 600),  # Large page: ~67ms expected, allow 250ms headroom
+        (500, 500),  # Typical A4 page: ~35ms expected, allow 150ms headroom
+        (1000, 1000),  # Large page: ~67ms expected, allow 250ms headroom
     ],
 )
 def test_canvas_performance(rose_pnm, num_words, max_time_ms):
