diff --git a/lib/public/iavatar.php b/lib/public/iavatar.php
index 6bf2ce1f19..fc29212a59 100644
--- a/lib/public/iavatar.php
+++ b/lib/public/iavatar.php
@@ -37,7 +37,7 @@ interface IAvatar {
 	 * @return boolean|\OCP\IImage containing the avatar or false if there's no image
 	 * @since 6.0.0
 	 */
-	function get($size = 64);
+	public function get($size = 64);
 
 	/**
 	 * Check if an avatar exists for the user
@@ -56,12 +56,12 @@ interface IAvatar {
 	 * @return void
 	 * @since 6.0.0
 	 */
-	function set($data);
+	public function set($data);
 
 	/**
 	 * remove the users avatar
 	 * @return void
 	 * @since 6.0.0
 	 */
-	function remove();
+	public function remove();
 }
diff --git a/lib/public/iavatarmanager.php b/lib/public/iavatarmanager.php
index 583b7f0afc..5ad5bf6a36 100644
--- a/lib/public/iavatarmanager.php
+++ b/lib/public/iavatarmanager.php
@@ -38,5 +38,5 @@ interface IAvatarManager {
 	 * @return \OCP\IAvatar
 	 * @since 6.0.0
 	 */
-	function getAvatar($user);
+	public function getAvatar($user);
 }
diff --git a/lib/public/icontainer.php b/lib/public/icontainer.php
index 27ca544ec6..35bf6a76ce 100644
--- a/lib/public/icontainer.php
+++ b/lib/public/icontainer.php
@@ -47,7 +47,7 @@ interface IContainer {
 	 * @return mixed
 	 * @since 6.0.0
 	 */
-	function query($name);
+	public function query($name);
 
 	/**
 	 * A value is stored in the container with it's corresponding name
@@ -57,7 +57,7 @@ interface IContainer {
 	 * @return void
 	 * @since 6.0.0
 	 */
-	function registerParameter($name, $value);
+	public function registerParameter($name, $value);
 
 	/**
 	 * A service is registered in the container where a closure is passed in which will actually
@@ -72,5 +72,5 @@ interface IContainer {
 	 * @return void
 	 * @since 6.0.0
 	 */
-	function registerService($name, \Closure $closure, $shared = true);
+	public function registerService($name, \Closure $closure, $shared = true);
 }
diff --git a/lib/public/ilogger.php b/lib/public/ilogger.php
index c36d9ff285..43b1ef70e5 100644
--- a/lib/public/ilogger.php
+++ b/lib/public/ilogger.php
@@ -39,7 +39,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function emergency($message, array $context = array());
+	public function emergency($message, array $context = array());
 
 	/**
 	 * Action must be taken immediately.
@@ -49,7 +49,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function alert($message, array $context = array());
+	public function alert($message, array $context = array());
 
 	/**
 	 * Critical conditions.
@@ -59,7 +59,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function critical($message, array $context = array());
+	public function critical($message, array $context = array());
 
 	/**
 	 * Runtime errors that do not require immediate action but should typically
@@ -70,7 +70,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function error($message, array $context = array());
+	public function error($message, array $context = array());
 
 	/**
 	 * Exceptional occurrences that are not errors.
@@ -80,7 +80,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function warning($message, array $context = array());
+	public function warning($message, array $context = array());
 
 	/**
 	 * Normal but significant events.
@@ -90,7 +90,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function notice($message, array $context = array());
+	public function notice($message, array $context = array());
 
 	/**
 	 * Interesting events.
@@ -100,7 +100,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function info($message, array $context = array());
+	public function info($message, array $context = array());
 
 	/**
 	 * Detailed debug information.
@@ -110,7 +110,7 @@ interface ILogger {
 	 * @return null
 	 * @since 7.0.0
 	 */
-	function debug($message, array $context = array());
+	public function debug($message, array $context = array());
 
 	/**
 	 * Logs with an arbitrary level.
@@ -121,5 +121,5 @@ interface ILogger {
 	 * @return mixed
 	 * @since 7.0.0
 	 */
-	function log($level, $message, array $context = array());
+	public function log($level, $message, array $context = array());
 }
diff --git a/lib/public/irequest.php b/lib/public/irequest.php
index a236c5df9a..20fa543dd6 100644
--- a/lib/public/irequest.php
+++ b/lib/public/irequest.php
@@ -68,7 +68,7 @@ interface IRequest {
 	 * @return string
 	 * @since 6.0.0
 	 */
-	function getHeader($name);
+	public function getHeader($name);
 
 	/**
 	 * Lets you access post and get parameters by the index
@@ -131,7 +131,7 @@ interface IRequest {
 	 * @return array the value in the $_COOKIE element
 	 * @since 6.0.0
 	 */
-	function getCookie($key);
+	public function getCookie($key);
 
 
 	/**