diff --git a/src/HTMLForm/TOTPEnableForm.php b/src/HTMLForm/TOTPEnableForm.php
index 4136cba5..f7da58b7 100644
--- a/src/HTMLForm/TOTPEnableForm.php
+++ b/src/HTMLForm/TOTPEnableForm.php
@@ -120,7 +120,7 @@ class TOTPEnableForm extends OATHAuthOOUIHTMLForm implements IManageForm {
 	 * The characters of the token are split in groups of 4
 	 *
 	 * @param TOTPKey $key
-	 * @return String
+	 * @return string
 	 */
 	protected function getSecretForDisplay( TOTPKey $key ) {
 		return $this->tokenFormatterFunction( $key->getSecret() );
diff --git a/src/OATHUser.php b/src/OATHUser.php
index bffb6e93..4b27ac47 100644
--- a/src/OATHUser.php
+++ b/src/OATHUser.php
@@ -55,7 +55,7 @@ class OATHUser {
 	}
 
 	/**
-	 * @return String
+	 * @return string
 	 */
 	public function getIssuer() {
 		global $wgSitename, $wgOATHAuthAccountPrefix;
@@ -67,7 +67,7 @@ class OATHUser {
 	}
 
 	/**
-	 * @return String
+	 * @return string
 	 */
 	public function getAccount() {
 		return $this->user->getName();