diff --git a/README b/README
index cbe71fcabab02bafca5ffc0638dc7e4994f532fc..6a2180ff177156c9497de9537a2fe6abd40ccdca 100644
--- a/README
+++ b/README
@@ -51,6 +51,7 @@ Features
   NOTE: The original CMUSieve plugin is based on old specifications of the 
   imap4flags and enotify extension. Among other subtle differences, these 
   extensions were known as 'imapflags' and 'notify' for the CMU Sieve plugin.
+  Support for the old imapflags extension is provided for backwards compatibility.
 
 * Supports executing multiple scrips sequentially.
   
@@ -94,10 +95,10 @@ following list outlines the implementation status of each supported extension:
     copy: full
     regex: mostly full; but suboptimal and no UTF-8
     body: mostly full, but text body-transform implementation is simple
-          and some issues make it still not completely RFC incompliant. 
+        and some issues make it still not completely RFC incompliant. 
     include: mostly full; needs some more work (no external binaries)
     vacation: mostly full; handling of utf-8 in headers is non-existant
-    imap4flags: full
+    imap4flags: full (old imapflags supported for backwards compatibility)
     variables: mostly full; currently no support for future namespaces 
     notify: full, mailto support only; needs to be tested more