diff --git a/Troubleshooting.md b/Troubleshooting.md
index cee5844..58711eb 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -4,6 +4,17 @@ This page is meant to be a starting point for people looking to find information
 
 ## Information by version number
 
+### 7.8.0
+
+I accidentally left two debug messages in the Matroska reader. They look like this (the numbers may vary):
+
+```
+kax i am at 12345
+create pack at 12345
+```
+
+These messages are harmless and can be safely ignored. They'll be removed for the next release.
+
 ### 7.6.0
 
 Only on Windows: The GUI (mmg.exe) has been linked a newer version of the wxWidgets GUI toolkit library than the previous release, 7.5.0. This results in two issues: