diff --git a/ChangeLog b/ChangeLog
index e2ccefc..addeb47 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,7 @@ stdout unless a filename is specified.
 * Update lrztar to properly support -S -O and -o, and use new syntax not
 requiring '-o -' for stdout.
 * Update lrzip.conf to support encryption.
+* Do a sanity check to ensure lrzip is not attempting to work on a directory.
 * Typo fixes.
 
 APRIL 2011, version 0.602 Con Kolivas
diff --git a/WHATS-NEW b/WHATS-NEW
index ed36d32..7fe5ee6 100644
--- a/WHATS-NEW
+++ b/WHATS-NEW
@@ -8,6 +8,8 @@ Apple builds will not have errors on compressing files >2GB in size which
 broke with 0.600.
 lrztar will properly support -o, -O and -S.
 lrzip.conf file now supports encryption.
+lrzip will now warn if it's inappropriately passed a directory as an argument
+directly.
 
 lrzip-0.602