diff --git a/tests/getpart.pm b/tests/getpart.pm
index 9519888eec..2162129dc6 100644
--- a/tests/getpart.pm
+++ b/tests/getpart.pm
@@ -28,12 +28,7 @@ my $xmlfile;
 my $warning=0;
 my $trace=0;
 
-sub decode_base64 {
-  tr:A-Za-z0-9+/::cd;                   # remove non-base64 chars
-  tr:A-Za-z0-9+/: -_:;                  # convert to uuencoded format
-  my $len = pack("c", 32 + 0.75*length);   # compute length byte
-  return unpack("u", $len . $_);         # uudecode and print
-}
+use MIME::Base64;
 
 sub decode_hex {
     my $s = $_;