diff --git a/CHANGELOG b/CHANGELOG
index c21dc7e1d4..9d469f608d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1912,7 +1912,7 @@ Version 3.4.3 (2015-12-22)
 	Fix rapid repeated requests to GNUSocial instance (issue #2038) (annando)
 	Fix install routine css when mod_rewrite doesn't works (issue #2071) (fabrixxm)
 	Fix code to be compliant with minimum required PHP version (issue #2066) (fabrixxm, rabuzarus)
-	Fix feedback after succesfull registration (issue #2060) (annando)
+	Fix feedback after successful registration (issue #2060) (annando)
 	Fix mention completion popup with TinyMCE (issue #1920) (fabrixxm)
 	Fix photo cache and proxy when installed in subfolder (ddorian1)
 	Fix bbcode conversion of the about text for the profile (issue #1607) (annando)
diff --git a/src/Database/DBA.php b/src/Database/DBA.php
index e29cd30386..d609f108eb 100644
--- a/src/Database/DBA.php
+++ b/src/Database/DBA.php
@@ -205,7 +205,7 @@ class DBA
 	 * Please use DBA::delete, DBA::insert, DBA::update, ... instead
 	 *
 	 * @param string $sql SQL statement
-	 * @return boolean Was the query successfull? False is returned only if an error occurred
+	 * @return boolean Was the query successful? False is returned only if an error occurred
 	 * @throws \Exception
 	 */
 	public static function e(string $sql): bool
@@ -420,7 +420,7 @@ class DBA
 	 * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate, false = don't update identical fields)
 	 * @param array         $params     Parameters: "ignore" If set to "true" then the update is done with the ignore parameter
 	 *
-	 * @return boolean was the update successfull?
+	 * @return boolean was the update successful?
 	 * @throws \Exception
 	 */
 	public static function update(string $table, array $fields, array $condition, $old_fields = [], array $params = []): bool
diff --git a/src/Database/Database.php b/src/Database/Database.php
index 9527fefb0f..4ee0fc31d7 100644
--- a/src/Database/Database.php
+++ b/src/Database/Database.php
@@ -767,7 +767,7 @@ class Database
 	 *
 	 * @param string $sql SQL statement
 	 *
-	 * @return boolean Was the query successfull? False is returned only if an error occurred
+	 * @return boolean Was the query successful? False is returned only if an error occurred
 	 * @throws \Exception
 	 */
 	public function e(string $sql): bool
@@ -1321,7 +1321,7 @@ class Database
 	 * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate, false = don't update identical fields)
 	 * @param array         $params     Parameters: "ignore" If set to "true" then the update is done with the ignore parameter
 	 *
-	 * @return boolean was the update successfull?
+	 * @return boolean was the update successful?
 	 * @throws \Exception
 	 * @todo Implement "bool $update_on_duplicate" to avoid mixed type for $old_fields
 	 */
diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 649142c14b..8792273eef 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -239,7 +239,7 @@ class Contact
 	 * @param array         $condition  condition array with the key values
 	 * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate, false = don't update identical fields)
 	 *
-	 * @return boolean was the update successfull?
+	 * @return boolean was the update successful?
 	 * @throws \Exception
 	 * @todo Let's get rid of boolean type of $old_fields
 	 */
@@ -1686,7 +1686,7 @@ class Contact
 	 * Unblocks a contact
 	 *
 	 * @param int $cid Contact id to unblock
-	 * @return bool Whether it was successfull
+	 * @return bool Whether it was successful
 	 */
 	public static function unblock(int $cid): bool
 	{
diff --git a/src/Model/GServer.php b/src/Model/GServer.php
index d9df8e205f..b034ded754 100644
--- a/src/Model/GServer.php
+++ b/src/Model/GServer.php
@@ -327,7 +327,7 @@ class GServer
 			return DateTimeFormat::utc('now +1 month');
 		}
 
-		// The system hadn't been successul contacted for more than a month, so try again in three months
+		// The system hadn't been successful contacted for more than a month, so try again in three months
 		return DateTimeFormat::utc('now +3 month');
 	}
 
diff --git a/src/Model/Photo.php b/src/Model/Photo.php
index 81ea227467..2d80df15ba 100644
--- a/src/Model/Photo.php
+++ b/src/Model/Photo.php
@@ -536,7 +536,7 @@ class Photo
 	 * @param Image $image      Image to update. Optional, default null.
 	 * @param array $old_fields Array with the old field values that are about to be replaced (true = update on duplicate)
 	 *
-	 * @return boolean  Was the update successfull?
+	 * @return boolean  Was the update successful?
 	 *
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @see   \Friendica\Database\DBA::update
diff --git a/src/Model/User.php b/src/Model/User.php
index b184b1a4b3..97853799a9 100644
--- a/src/Model/User.php
+++ b/src/Model/User.php
@@ -1377,7 +1377,7 @@ class User
 	 * permanently against re-registration, as the person was not yet
 	 * allowed to have friends on this system
 	 *
-	 * @return bool True, if the deny was successfull
+	 * @return bool True, if the deny was successful
 	 * @throws Exception
 	 */
 	public static function deny(string $hash): bool