diff --git a/fix/fixer.go b/fix/fixer.go
index 859e6e3aa..af1587aa1 100644
--- a/fix/fixer.go
+++ b/fix/fixer.go
@@ -50,6 +50,7 @@ func init() {
 		"ssh-wait-timeout":           new(FixerSSHTimout),
 		"docker-tag-tags":            new(FixerDockerTagtoTags),
 		"vsphere-iso-net-disk":       new(FixerVSphereNetworkDisk),
+		"iso-checksum-type-and-url":  new(FixerISOChecksumTypeAndURL),
 	}
 
 	FixerOrder = []string{
@@ -83,5 +84,6 @@ func init() {
 		"comm-config",
 		"ssh-wait-timeout",
 		"vsphere-iso-net-disk",
+		"iso-checksum-type-and-url",
 	}
 }
diff --git a/fix/fixer_iso_checksum_type_and_url.go b/fix/fixer_iso_checksum_type_and_url.go
index 314d59127..3730e2871 100644
--- a/fix/fixer_iso_checksum_type_and_url.go
+++ b/fix/fixer_iso_checksum_type_and_url.go
@@ -27,7 +27,9 @@ func (FixerISOChecksumTypeAndURL) Fix(input map[string]interface{}) (map[string]
 		checksum := stringValue(builder["iso_checksum"])
 		delete(builder, "iso_checksum_url")
 		delete(builder, "iso_checksum_type")
-
+		if checksum == "" && checksumUrl == "" {
+			continue
+		}
 		if checksumUrl != "" {
 			checksum = "file:" + checksumUrl
 		} else if checksumType != "" {