diff --git a/notes-on-testing.md b/notes-on-testing.md
index d1501ce..7cd03ea 100644
--- a/notes-on-testing.md
+++ b/notes-on-testing.md
@@ -3,7 +3,7 @@
 - according to the mattermost discussion of 13/14 dec, there may be variations of illustration size used on mailbox screens - normal, short and none... if that decision is made, then that will need to be tested too
 
 - discussion on the MM 20/12 - error handling.  Find out how to trigger each error response mentioned, to verify that they are handled correctly.
-[Maibox_coverage_matrix.ods](uploads/ef74c177f5f3ad5c31197c6ec0508152/Maibox_coverage_matrix.ods)
+[Maibox_coverage_matrix.ods](uploads/64384d3604ff911bbda505cd00b95ad5/Maibox_coverage_matrix.ods)