diff --git a/Store/StoreFactory.php b/Store/StoreFactory.php
index bc12c27..b9a5c1e 100644
--- a/Store/StoreFactory.php
+++ b/Store/StoreFactory.php
@@ -33,7 +33,7 @@ class StoreFactory
     public static function createStore($connection)
     {
         if (!\is_string($connection) && !\is_object($connection)) {
-            throw new \TypeError(sprintf('Argument 1 passed to %s() must be a string or a connection object, %s given.', __METHOD__, \gettype($connection)));
+            throw new \TypeError(sprintf('Argument 1 passed to "%s()" must be a string or a connection object, "%s" given.', __METHOD__, \gettype($connection)));
         }
 
         switch (true) {
@@ -56,7 +56,7 @@ public static function createStore($connection)
                 return new ZookeeperStore($connection);
 
             case !\is_string($connection):
-                throw new InvalidArgumentException(sprintf('Unsupported Connection: %s.', \get_class($connection)));
+                throw new InvalidArgumentException(sprintf('Unsupported Connection: "%s".', \get_class($connection)));
             case 'flock' === $connection:
                 return new FlockStore();
 
diff --git a/Store/ZookeeperStore.php b/Store/ZookeeperStore.php
index cc46db1..90d5296 100644
--- a/Store/ZookeeperStore.php
+++ b/Store/ZookeeperStore.php
@@ -38,11 +38,11 @@ public function __construct(\Zookeeper $zookeeper)
     public static function createConnection(string $dsn): \Zookeeper
     {
         if (0 !== strpos($dsn, 'zookeeper:')) {
-            throw new InvalidArgumentException(sprintf('Unsupported DSN: %s.', $dsn));
+            throw new InvalidArgumentException(sprintf('Unsupported DSN: "%s".', $dsn));
         }
 
         if (false === $params = parse_url($dsn)) {
-            throw new InvalidArgumentException(sprintf('Invalid Zookeeper DSN: %s.', $dsn));
+            throw new InvalidArgumentException(sprintf('Invalid Zookeeper DSN: "%s".', $dsn));
         }
 
         $host = $params['host'] ?? '';