diff --git a/Nasal/IOrules b/Nasal/IOrules
index 68c18b276..91d0abd92 100644
--- a/Nasal/IOrules
+++ b/Nasal/IOrules
@@ -29,7 +29,7 @@ READ ALLOW $FG_ROOT/*
 READ ALLOW $FG_HOME/*
 
 WRITE ALLOW $FG_HOME/*.sav
+WRITE ALLOW $FG_HOME/*.log
 WRITE ALLOW $FG_HOME/Export/*
 WRITE ALLOW $FG_HOME/state/*.xml
 WRITE ALLOW $FG_HOME/aircraft-data/*.xml
-WRITE ALLOW $FG_HOME/mp-message.log