diff --git a/builder.sh b/builder.sh
index b41d8d67864e6662dcf7bf90ca4d95f0e001be42..fa5aad9a012374b646f96b875f12cb894558dfe5 100755
--- a/builder.sh
+++ b/builder.sh
@@ -104,3 +104,5 @@ echo Renaming files for consistent naming scheme
 (cd output/${RELEASETAG}/factory; for f in *x86-generic.vmdk; do mv "$f" "${f/x86-generic/x86-vmware}"; done )
 (cd output/${RELEASETAG}/factory; for f in *x86-generic.vdi; do mv "$f" "${f/x86-generic/x86-virtualbox}"; done )
 
+# create md5sums
+(cd output/${RELEASETAG}/factory; md5sum * > MD5SUMS)