diff --git a/api-compose-object.go b/api-compose-object.go
index 59abc02f8..8c12c355c 100644
--- a/api-compose-object.go
+++ b/api-compose-object.go
@@ -119,7 +119,7 @@ func (opts CopyDestOptions) Marshal(header http.Header) {
 	if opts.ReplaceMetadata {
 		header.Set("x-amz-metadata-directive", replaceDirective)
 		for k, v := range filterCustomMeta(opts.UserMetadata) {
-			if isAmzHeader(k) || isStandardHeader(k) || isStorageClassHeader(k) || isValidReplicationHeader(k) {
+			if isAmzHeader(k) || isStandardHeader(k) || isStorageClassHeader(k) || isValidReplicationEncryptionHeader(k) {
 				header.Set(k, v)
 			} else {
 				header.Set("x-amz-meta-"+k, v)
diff --git a/api-put-object.go b/api-put-object.go
index 2c9e430b4..4dec6040d 100644
--- a/api-put-object.go
+++ b/api-put-object.go
@@ -212,7 +212,7 @@ func (opts PutObjectOptions) Header() (header http.Header) {
 	}
 
 	for k, v := range opts.UserMetadata {
-		if isAmzHeader(k) || isStandardHeader(k) || isStorageClassHeader(k) || isValidReplicationHeader(k) {
+		if isAmzHeader(k) || isStandardHeader(k) || isStorageClassHeader(k) || isValidReplicationEncryptionHeader(k) {
 			header.Set(k, v)
 		} else {
 			header.Set("x-amz-meta-"+k, v)
@@ -230,7 +230,7 @@ func (opts PutObjectOptions) Header() (header http.Header) {
 // validate() checks if the UserMetadata map has standard headers or and raises an error if so.
 func (opts PutObjectOptions) validate() (err error) {
 	for k, v := range opts.UserMetadata {
-		if !httpguts.ValidHeaderFieldName(k) || isStandardHeader(k) || isSSEHeader(k) || isStorageClassHeader(k) || isValidReplicationHeader(k) {
+		if !httpguts.ValidHeaderFieldName(k) || isStandardHeader(k) || isSSEHeader(k) || isStorageClassHeader(k) || isValidReplicationEncryptionHeader(k) {
 			return errInvalidArgument(k + " unsupported user defined metadata name")
 		}
 		if !httpguts.ValidHeaderFieldValue(v) {
diff --git a/utils.go b/utils.go
index 8e56e5b42..3e7765c1a 100644
--- a/utils.go
+++ b/utils.go
@@ -520,8 +520,8 @@ var supportedReplicationHeaders = map[string]bool{
 	// Must be lower case.
 }
 
-// isValidReplicationHeader returns true if header is one of valid internal headers
-func isValidReplicationHeader(headerKey string) bool {
+// isValidReplicationEncryptionHeader returns true if header is one of valid internal headers
+func isValidReplicationEncryptionHeader(headerKey string) bool {
 	return supportedReplicationHeaders[strings.ToLower(headerKey)]
 }