diff --git a/configure b/configure
index 20d7199..a5e51b3 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 1.374 .
+# From configure.in Revision: 1.375 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53 for python 2.3.
 #
@@ -11653,7 +11653,9 @@
 if test -z "$with_universal_newlines"
 then with_universal_newlines="yes"
 fi
-if test "$with_universal_newlines" != "no"
+if test "$with_universal_newlines" = "no"
+    echo --without-universal-newlines is unsupported, see README
+    exit 1
 then
 
 cat >>confdefs.h <<\_ACEOF