diff --git a/configure b/configure
index 5253b86..fcb6fd5 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 78197 .
+# From configure.in Revision: 78474 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 3.1.
 #
@@ -23670,6 +23670,9 @@
 #define Py_UNICODE_SIZE 2
 _ACEOF
  ;;
+*) { { echo "$as_me:$LINENO: error: invalid value for --enable-unicode. Use either ucs2 or ucs4 (lowercase)." >&5
+echo "$as_me: error: invalid value for --enable-unicode. Use either ucs2 or ucs4 (lowercase)." >&2;}
+   { (exit 1); exit 1; }; } ;;
 esac