Index: configure.in
===================================================================
--- configure.in	(revision 52597)
+++ configure.in	(working copy)
@@ -3777,7 +3777,7 @@
 RDOCTARGET=""
 CAPITARGET=""
 AC_ARG_ENABLE(install-doc,
-       AS_HELP_STRING([--disable-install-doc], [do not install neither rdoc indexes nor C API documents during install]),
+       AS_HELP_STRING([--disable-install-doc], [do not install either rdoc indexes or C API documents during install]),
        [install_doc=$enableval], [install_doc=yes])
 AC_ARG_ENABLE(install-rdoc,
       AS_HELP_STRING([--disable-install-rdoc], [do not install rdoc indexes during install]),