diff --git a/performrelease.sh b/performrelease.sh
index 26708c6..faeec2d 100755
--- a/performrelease.sh
+++ b/performrelease.sh
@@ -102,11 +102,8 @@ else
   gpg -v --default-key $certid --armor --output apache-cloudstack-cloudmonkey-$version-src.tar.bz2.asc --detach-sig apache-cloudstack-cloudmonkey-$version-src.tar.bz2
 fi
 
-echo 'md5'
-gpg -v --print-md MD5 apache-cloudstack-cloudmonkey-$version-src.tar.bz2 > apache-cloudstack-cloudmonkey-$version-src.tar.bz2.md5
-
 echo 'sha512'
-gpg -v --print-md SHA512 apache-cloudstack-cloudmonkey-$version-src.tar.bz2 > apache-cloudstack-cloudmonkey-$version-src.tar.bz2.sha512
+sha512sum apache-cloudstack-cloudmonkey-$version-src.tar.bz2 > apache-cloudstack-cloudmonkey-$version-src.tar.bz2.sha512
 
 echo 'verify'
 gpg -v --verify apache-cloudstack-cloudmonkey-$version-src.tar.bz2.asc apache-cloudstack-cloudmonkey-$version-src.tar.bz2
@@ -137,11 +134,9 @@ if [ "$committosvn" == "yes" ]; then
   fi
   cp $outputdir/apache-cloudstack-cloudmonkey-$version-src.tar.bz2 .
   cp $outputdir/apache-cloudstack-cloudmonkey-$version-src.tar.bz2.asc .
-  cp $outputdir/apache-cloudstack-cloudmonkey-$version-src.tar.bz2.md5 .
   cp $outputdir/apache-cloudstack-cloudmonkey-$version-src.tar.bz2.sha512 .
   svn add apache-cloudstack-cloudmonkey-$version-src.tar.bz2
   svn add apache-cloudstack-cloudmonkey-$version-src.tar.bz2.asc
-  svn add apache-cloudstack-cloudmonkey-$version-src.tar.bz2.md5
   svn add apache-cloudstack-cloudmonkey-$version-src.tar.bz2.sha512
   svn commit -m "Committing release candidate artifacts for $version to dist/dev/cloudstack in preparation for release vote"
 fi