diff --git a/ChangeLog b/ChangeLog
index 8fef6d8a..ff36a342 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	Consistently refer to Yacc, not YACC.
+	* src/getargs.c (usage, warnings_args): s/YACC/Yacc/.
+
 2009-04-17  Joel E. Denny  <jdenny@ces.clemson.edu>
 
 	Pacify make maintainer-check-posix.
diff --git a/src/getargs.c b/src/getargs.c
index fa179bf4..368470fb 100644
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -221,7 +221,7 @@ static const char * const warnings_args[] =
      that argmatch_valid be more readable.  */
   "none            - no warnings",
   "midrule-values  - unset or unused midrule values",
-  "yacc            - incompatibilities with POSIX YACC",
+  "yacc            - incompatibilities with POSIX Yacc",
   "all             - all of the above",
   "error           - warnings are errors",
   0
@@ -318,7 +318,7 @@ Output:\n\
       fputs (_("\
 Warning categories include:\n\
   `midrule-values'  unset or unused midrule values\n\
-  `yacc'            incompatibilities with POSIX YACC\n\
+  `yacc'            incompatibilities with POSIX Yacc\n\
   `all'             all the warnings\n\
   `no-CATEGORY'     turn off warnings in CATEGORY\n\
   `none'            turn off all the warnings\n\