diff --git a/traffic_ops/traffic_ops_golang/cdn/dnssec.go b/traffic_ops/traffic_ops_golang/cdn/dnssec.go
index 606ac49720..fe87cae112 100644
--- a/traffic_ops/traffic_ops_golang/cdn/dnssec.go
+++ b/traffic_ops/traffic_ops_golang/cdn/dnssec.go
@@ -165,6 +165,7 @@ func generateStoreDNSSECKeys(
 	if !strings.HasSuffix(cdnDNSDomain, ".") {
 		cdnDNSDomain = cdnDNSDomain + "."
 	}
+	cdnDNSDomain = strings.ToLower(cdnDNSDomain)
 
 	inception := time.Now()
 	newCDNZSK, err := deliveryservice.GetDNSSECKeysV11(tc.DNSSECZSKType, cdnDNSDomain, ttl, inception, inception.Add(zExp), tc.DNSSECKeyStatusNew, time.Unix(effectiveDateUnix, 0), false)
diff --git a/traffic_ops/traffic_ops_golang/deliveryservice/dnssec.go b/traffic_ops/traffic_ops_golang/deliveryservice/dnssec.go
index 42a9fab2c7..b33d796886 100644
--- a/traffic_ops/traffic_ops_golang/deliveryservice/dnssec.go
+++ b/traffic_ops/traffic_ops_golang/deliveryservice/dnssec.go
@@ -177,6 +177,7 @@ func GetDSDomainName(dsExampleURLs []string) (string, error) {
 		return "", errors.New("malformed example URL, nothing after first dot")
 	}
 	dsName = dsName[firstDot+1:]
+	dsName = strings.ToLower(dsName)
 	return dsName, nil
 }