diff --git a/appendixa/bison-desc.xml b/appendixa/bison-desc.xml
index 41fd31543..b347ae7e0 100644
--- a/appendixa/bison-desc.xml
+++ b/appendixa/bison-desc.xml
@@ -45,9 +45,9 @@ alone.</para></sect4>
 
 <sect4><title>yacc</title>
 
-<para>We create a yacc script which calls bison using the -y option.
-This is for compatibility purposes for programs which use yacc instead
-of bison.</para></sect4>
+<para>We create a bash script called yacc which calls bison using the -y
+option. This is for compatibility purposes for programs which use yacc
+instead of bison.</para></sect4>
 
 </sect3>