diff --git a/bin/perms.sh b/bin/perms.sh
index 0b378a6..0d2f79d 100755
--- a/bin/perms.sh
+++ b/bin/perms.sh
@@ -10,14 +10,14 @@ aws s3api put-object-acl --bucket $bucket --key $vagrant_key  --acl public-read
 
 echo "(https://s3-us-west-1.amazonaws.com/$bucket/$vagrant_key)"
 
-echo $(md5 builds/$vagrant_key)
+echo $(md5sum builds/$vagrant_key)
 
 echo "Found $ova_key"
 aws s3api put-object-acl --bucket $bucket --key $ova_key  --acl public-read
 
 echo "(https://s3-us-west-1.amazonaws.com/$bucket/$ova_key)"
 
-echo $(md5 builds/$ova_key)
+echo $(md5sum builds/$ova_key)
 
 ami_id=$(aws ec2 describe-images --owners $aws_acct_id --query 'reverse(sort_by(Images[?starts_with(Name, `import-ami`)], &CreationDate))[0].[ImageId]' --output text | tr -d '\n' )
 echo "Publishing $ami_id to $aws_acct_id"