diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen
index d5542a22a..0fa90636b 100755
--- a/build-aux/git-version-gen
+++ b/build-aux/git-version-gen
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Print a version string.
-scriptversion=2012-01-06.07; # UTC
+scriptversion=2012-03-18.17; # UTC
 
 # Copyright (C) 2007-2012 Free Software Foundation, Inc.
 #
@@ -92,6 +92,8 @@ Options:
 
 Running without arguments will suffice in most cases."
 
+prefix=v
+
 while test $# -gt 0; do
   case $1 in
     --help) echo "$usage"; exit 0;;
@@ -120,7 +122,6 @@ if test -z "$tarball_version_file"; then
 fi
 
 tag_sed_script="${tag_sed_script:-s/x/x/}"
-prefix="${prefix:-v}"
 
 nl='
 '