diff --git a/configure.in b/configure.in
index ab6e4a99..cbe0b122 100644
--- a/configure.in
+++ b/configure.in
@@ -98,6 +98,7 @@ AC_ARG_WITH(modules,
 	fi)
 
 if test "x$prefix" != "xNONE"; then
+        prefix=`eval echo $prefix`
 	PERL_MM_PARAMS="INSTALLDIRS=perl PREFIX=$prefix"
 	PERL_USE_LIB="$prefix`$perlpath -e 'use Config; $dir = $Config{archlibexp}; $prefix = $Config{prefixexp}; $dir =~ s/^$prefix//; print $dir;'`"