diff --git a/README.md b/README.md
index 5bffa68..7d23417 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ Which would be enough to tell sanoid to take and keep 36 hourly snapshots, 30 da
 
 + --take-snapshots
 
-	This will process your sanoid.conf file, create snapshots, but it will NOT purge expired ones. Note that snapshots are not atomic relative to one another.
+	This will process your sanoid.conf file, create snapshots, but it will NOT purge expired ones. (Note that snapshots taken are atomic in an individual dataset context, <i>not</i> a global context - snapshots of pool/dataset1 and pool/dataset2 will each be internally consistent and atomic, but one may be a few filesystem transactions "newer" than the other.)
 	
 + --prune-snapshots