diff --git a/racket/src/rktio/configure b/racket/src/rktio/configure
index 4bb912e819..e4b0b97396 100755
--- a/racket/src/rktio/configure
+++ b/racket/src/rktio/configure
@@ -621,6 +621,7 @@ ac_includes_default="\
 
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
+RKTIO_NO_ICONV
 HIDE_STANDALONE
 HIDE_NOT_STANDALONE
 LTA
@@ -3967,7 +3968,7 @@ $as_echo "$iconv_usage_result" >&6; }
 fi
 if test "${enable_iconv}" = "no" ; then
 
-$as_echo "#define RKTIO_NO_ICON 1" >>confdefs.h
+$as_echo "#define RKTIO_NO_ICONV 1" >>confdefs.h
 
 fi
 
@@ -4279,6 +4280,8 @@ fi
 
 
 
+
+
 
 makefiles="Makefile"
 
diff --git a/racket/src/rktio/configure.ac b/racket/src/rktio/configure.ac
index 7e27249a51..eefc6e5323 100644
--- a/racket/src/rktio/configure.ac
+++ b/racket/src/rktio/configure.ac
@@ -180,7 +180,7 @@ if test "${skip_iconv_check}" = "no" ; then
  AC_MSG_RESULT($iconv_usage_result)
 fi
 if test "${enable_iconv}" = "no" ; then
-  AC_DEFINE(RKTIO_NO_ICON,1,[Do not use iconv])
+  AC_DEFINE(RKTIO_NO_ICONV,1,[Do not use iconv])
 fi
 
 if test "${enable_iconv}" = "yes" ; then
@@ -404,6 +404,8 @@ AC_SUBST(LTA)
 AC_SUBST(HIDE_NOT_STANDALONE)
 AC_SUBST(HIDE_STANDALONE)
 
+AC_SUBST(RKTIO_NO_ICONV)
+
 makefiles="Makefile"
 
 AC_OUTPUT($makefiles)