diff -r 59949cf040cb -r 53df0095b5e4 NEWS
--- a/NEWS	Sun Dec 19 17:39:20 2010 -0800
+++ b/NEWS	Sun Dec 19 18:10:54 2010 -0800
@@ -71,7 +71,7 @@
 "no_abbrevs" with inverted meaning.
 
 * More systematic naming of some configuration options.
-INCOMPATIBILTY.
+INCOMPATIBILITY.
 
   trace_simp  ~>  simp_trace
   debug_simp  ~>  simp_debug