diff --git a/profiler/src/achievements/LoadTrace.md b/profiler/src/achievements/LoadTrace.md
index 54924892..ee9ef0e5 100644
--- a/profiler/src/achievements/LoadTrace.md
+++ b/profiler/src/achievements/LoadTrace.md
@@ -1,3 +1,5 @@
 # Load a trace
 
 You can open a previously saved trace file (or one received from a friend) with the * Open saved trace* button on the welcome screen.
+
+Trace files are version-specific: a trace from a newer Tracy version will fail to open, but traces from older versions load fine — only very old traces are rejected.