diff --git a/lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php b/lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php
index 19dba0ebd49..719053c8669 100644
--- a/lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php
+++ b/lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php
@@ -2,6 +2,13 @@
 
 namespace Doctrine\DBAL\Connections;
 
+use Doctrine\Common\EventManager;
+use Doctrine\DBAL\Configuration;
+use Doctrine\DBAL\Driver;
+use function sprintf;
+use function trigger_error;
+use const E_USER_DEPRECATED;
+
 class MasterSlaveConnection extends PrimaryReplicaConnection
 {
     /**
@@ -41,12 +48,10 @@ public function __construct(array $params, Driver $driver, ?Configuration $confi
 
     /**
      * Checks if the connection is currently towards the primary or not.
-     *
-     * @return bool
      */
     public function isConnectedToMaster() : bool
     {
-        $this->deprecated("isConnectedtoMaster()", "isConnectedToPrimary()");
+        $this->deprecated('isConnectedtoMaster()', 'isConnectedToPrimary()');
 
         return $this->isConnectedToPrimary();
     }
@@ -58,14 +63,14 @@ public function isConnectedToMaster() : bool
      */
     public function connect($connectionName = null)
     {
-        if ($connectionName === "master") {
-            $connectionName = "primary";
+        if ($connectionName === 'master') {
+            $connectionName = 'primary';
 
             $this->deprecated('connect("master")', 'connect("primary")');
         }
 
-        if ($connectionName === "slave") {
-            $connectionName = "replica";
+        if ($connectionName === 'slave') {
+            $connectionName = 'replica';
 
             $this->deprecated('connect("slave")', 'connect("replica")');
         }
@@ -77,7 +82,7 @@ private function deprecated(string $thing, string $instead) : void
     {
         @trigger_error(
             sprintf(
-                "%s is deprecated since doctrine/dbal 2.10 and will be removed in 3.0, use %s instead.",
+                '%s is deprecated since doctrine/dbal 2.10 and will be removed in 3.0, use %s instead.',
                 $thing,
                 $instead
             ),
diff --git a/lib/Doctrine/DBAL/Connections/PrimaryReplicaConnection.php b/lib/Doctrine/DBAL/Connections/PrimaryReplicaConnection.php
index ab67dd08cdc..f14c1b158c2 100644
--- a/lib/Doctrine/DBAL/Connections/PrimaryReplicaConnection.php
+++ b/lib/Doctrine/DBAL/Connections/PrimaryReplicaConnection.php
@@ -144,7 +144,7 @@ public function connect($connectionName = null)
         $forcePrimaryAsReplica = false;
 
         if ($this->getTransactionNestingLevel() > 0) {
-            $connectionName     = 'primary';
+            $connectionName        = 'primary';
             $forcePrimaryAsReplica = true;
         }
 
diff --git a/tests/Doctrine/Tests/DBAL/Functional/PrimaryReplicaconnectionTest.php b/tests/Doctrine/Tests/DBAL/Functional/PrimaryReplicaconnectionTest.php
index 730580d7cd7..1585d977a63 100644
--- a/tests/Doctrine/Tests/DBAL/Functional/PrimaryReplicaconnectionTest.php
+++ b/tests/Doctrine/Tests/DBAL/Functional/PrimaryReplicaconnectionTest.php
@@ -72,7 +72,7 @@ public function testInheritCharsetFromPrimary() : void
         ];
 
         foreach ($charsets as $charset) {
-            $params                      = $this->createPrimaryReplicaConnectionParams();
+            $params                       = $this->createPrimaryReplicaConnectionParams();
             $params['primary']['charset'] = $charset;
 
             foreach ($params['replica'] as $index => $replicaParams) {