diff --git a/src/Symfony/Component/BrowserKit/AbstractBrowser.php b/src/Symfony/Component/BrowserKit/AbstractBrowser.php
index de85599fd7..dbd6051c8f 100644
--- a/src/Symfony/Component/BrowserKit/AbstractBrowser.php
+++ b/src/Symfony/Component/BrowserKit/AbstractBrowser.php
@@ -451,7 +451,7 @@ abstract class AbstractBrowser
         }
 
         if (!$process->isSuccessful() || !preg_match('/^O\:\d+\:/', $process->getOutput())) {
-            throw new \RuntimeException(sprintf('OUTPUT: %s ERROR OUTPUT: %s', $process->getOutput(), $process->getErrorOutput()));
+            throw new \RuntimeException(sprintf('OUTPUT: %s ERROR OUTPUT: %s.', $process->getOutput(), $process->getErrorOutput()));
         }
 
         return unserialize($process->getOutput());
diff --git a/src/Symfony/Component/Cache/Adapter/ApcuAdapter.php b/src/Symfony/Component/Cache/Adapter/ApcuAdapter.php
index 62ba4d9a82..48d2f5ec4b 100644
--- a/src/Symfony/Component/Cache/Adapter/ApcuAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ApcuAdapter.php
@@ -25,7 +25,7 @@ class ApcuAdapter extends AbstractAdapter
     public function __construct(string $namespace = '', int $defaultLifetime = 0, string $version = null)
     {
         if (!static::isSupported()) {
-            throw new CacheException('APCu is not enabled');
+            throw new CacheException('APCu is not enabled.');
         }
         if ('cli' === \PHP_SAPI) {
             ini_set('apc.use_request_time', 0);
diff --git a/src/Symfony/Component/Cache/Adapter/MemcachedAdapter.php b/src/Symfony/Component/Cache/Adapter/MemcachedAdapter.php
index e2bc068050..1ac98405a0 100644
--- a/src/Symfony/Component/Cache/Adapter/MemcachedAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/MemcachedAdapter.php
@@ -48,7 +48,7 @@ class MemcachedAdapter extends AbstractAdapter
     public function __construct(\Memcached $client, string $namespace = '', int $defaultLifetime = 0, MarshallerInterface $marshaller = null)
     {
         if (!static::isSupported()) {
-            throw new CacheException('Memcached >= 2.2.0 is required');
+            throw new CacheException('Memcached >= 2.2.0 is required.');
         }
         if ('Memcached' === \get_class($client)) {
             $opt = $client->getOption(\Memcached::OPT_SERIALIZER);
@@ -95,7 +95,7 @@ class MemcachedAdapter extends AbstractAdapter
             throw new InvalidArgumentException(sprintf('MemcachedAdapter::createClient() expects array or string as first argument, %s given.', \gettype($servers)));
         }
         if (!static::isSupported()) {
-            throw new CacheException('Memcached >= 2.2.0 is required');
+            throw new CacheException('Memcached >= 2.2.0 is required.');
         }
         set_error_handler(function ($type, $msg, $file, $line) { throw new \ErrorException($msg, 0, $type, $file, $line); });
         try {
@@ -110,7 +110,7 @@ class MemcachedAdapter extends AbstractAdapter
                     continue;
                 }
                 if (0 !== strpos($dsn, 'memcached:')) {
-                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s does not start with "memcached:"', $dsn));
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s does not start with "memcached:".', $dsn));
                 }
                 $params = preg_replace_callback('#^memcached:(//)?(?:([^@]*+)@)?#', function ($m) use (&$username, &$password) {
                     if (!empty($m[2])) {
@@ -120,7 +120,7 @@ class MemcachedAdapter extends AbstractAdapter
                     return 'file:'.($m[1] ?? '');
                 }, $dsn);
                 if (false === $params = parse_url($params)) {
-                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s', $dsn));
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s.', $dsn));
                 }
                 $query = $hosts = [];
                 if (isset($params['query'])) {
@@ -128,7 +128,7 @@ class MemcachedAdapter extends AbstractAdapter
 
                     if (isset($query['host'])) {
                         if (!\is_array($hosts = $query['host'])) {
-                            throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s', $dsn));
+                            throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s.', $dsn));
                         }
                         foreach ($hosts as $host => $weight) {
                             if (false === $port = strrpos($host, ':')) {
@@ -147,7 +147,7 @@ class MemcachedAdapter extends AbstractAdapter
                     }
                 }
                 if (!isset($params['host']) && !isset($params['path'])) {
-                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s', $dsn));
+                    throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s.', $dsn));
                 }
                 if (isset($params['path']) && preg_match('#/(\d+)$#', $params['path'], $m)) {
                     $params['weight'] = $m[1];
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index 99a671516a..73e4695ba8 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -73,7 +73,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
 
         if ($connOrDsn instanceof \PDO) {
             if (\PDO::ERRMODE_EXCEPTION !== $connOrDsn->getAttribute(\PDO::ATTR_ERRMODE)) {
-                throw new InvalidArgumentException(sprintf('"%s" requires PDO error mode attribute be set to throw Exceptions (i.e. $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION))', __CLASS__));
+                throw new InvalidArgumentException(sprintf('"%s" requires PDO error mode attribute be set to throw Exceptions (i.e. $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION)).', __CLASS__));
             }
 
             $this->conn = $connOrDsn;
diff --git a/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php b/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php
index f148a8909f..71e52d43d4 100644
--- a/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php
@@ -264,7 +264,7 @@ class PhpFilesAdapter extends AbstractAdapter implements PruneableInterface
         }
 
         if (!$ok && !is_writable($this->directory)) {
-            throw new CacheException(sprintf('Cache directory is not writable (%s)', $this->directory));
+            throw new CacheException(sprintf('Cache directory is not writable (%s).', $this->directory));
         }
 
         return $ok;
diff --git a/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransportFactory.php b/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransportFactory.php
index 9640d64c3c..9d70cdeaf9 100644
--- a/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransportFactory.php
+++ b/src/Symfony/Component/Notifier/Bridge/Telegram/TelegramTransportFactory.php
@@ -50,11 +50,11 @@ final class TelegramTransportFactory extends AbstractTransportFactory
     private function getToken(Dsn $dsn): string
     {
         if (null === $dsn->getUser() && null === $dsn->getPassword()) {
-            throw new IncompleteDsnException('Missing token');
+            throw new IncompleteDsnException('Missing token.');
         }
 
         if (null === $dsn->getPassword()) {
-            throw new IncompleteDsnException('Malformed token');
+            throw new IncompleteDsnException('Malformed token.');
         }
 
         return sprintf('%s:%s', $dsn->getUser(), $dsn->getPassword());