diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index dc620fc..778c420 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -410,9 +410,13 @@
 	if (!cipher_key_bytes_set) {
 		mount_crypt_stat->global_default_cipher_key_size = 0;
 	}
-	rc = ecryptfs_add_new_key_tfm(
-		NULL, mount_crypt_stat->global_default_cipher_name,
-		mount_crypt_stat->global_default_cipher_key_size);
+	mutex_lock(&key_tfm_list_mutex);
+	if (!ecryptfs_tfm_exists(mount_crypt_stat->global_default_cipher_name,
+				 NULL))
+		rc = ecryptfs_add_new_key_tfm(
+			NULL, mount_crypt_stat->global_default_cipher_name,
+			mount_crypt_stat->global_default_cipher_key_size);
+	mutex_unlock(&key_tfm_list_mutex);
 	if (rc) {
 		printk(KERN_ERR "Error attempting to initialize cipher with "
 		       "name = [%s] and key size = [%td]; rc = [%d]\n",