diff --git a/composer.json b/composer.json
index 642dd61b..906aa3f2 100644
--- a/composer.json
+++ b/composer.json
@@ -24,6 +24,9 @@
 		"latte/latte": "~2.4",
 		"tracy/tracy": "^2.4"
 	},
+	"suggest": {
+		"ext-pdo_sqlite": "to use SQLiteStorage or SQLiteJournal"
+	},
 	"conflict": {
 		"nette/nette": "<2.2"
 	},
diff --git a/src/Bridges/CacheDI/CacheExtension.php b/src/Bridges/CacheDI/CacheExtension.php
index f3d14bc9..eed4ff20 100644
--- a/src/Bridges/CacheDI/CacheExtension.php
+++ b/src/Bridges/CacheDI/CacheExtension.php
@@ -29,20 +29,16 @@ public function loadConfiguration()
 	{
 		$builder = $this->getContainerBuilder();
 
-		if (extension_loaded('pdo_sqlite')) {
-			$builder->addDefinition($this->prefix('journal'))
-				->setClass(Nette\Caching\Storages\IJournal::class)
-				->setFactory(Nette\Caching\Storages\SQLiteJournal::class, [$this->tempDir . '/cache/journal.s3db']);
-		}
+		$builder->addDefinition($this->prefix('journal'))
+			->setClass(Nette\Caching\Storages\IJournal::class)
+			->setFactory(Nette\Caching\Storages\SQLiteJournal::class, [$this->tempDir . '/cache/journal.s3db']);
 
 		$builder->addDefinition($this->prefix('storage'))
 			->setClass(Nette\Caching\IStorage::class)
 			->setFactory(Nette\Caching\Storages\FileStorage::class, [$this->tempDir . '/cache']);
 
 		if ($this->name === 'cache') {
-			if (extension_loaded('pdo_sqlite')) {
-				$builder->addAlias('nette.cacheJournal', $this->prefix('journal'));
-			}
+			$builder->addAlias('nette.cacheJournal', $this->prefix('journal'));
 			$builder->addAlias('cacheStorage', $this->prefix('storage'));
 		}
 	}
diff --git a/src/Caching/Storages/SQLiteJournal.php b/src/Caching/Storages/SQLiteJournal.php
index 30ab17fc..e3a3a0d0 100644
--- a/src/Caching/Storages/SQLiteJournal.php
+++ b/src/Caching/Storages/SQLiteJournal.php
@@ -30,15 +30,16 @@ class SQLiteJournal implements IJournal
 	 */
 	public function __construct($path)
 	{
-		if (!extension_loaded('pdo_sqlite')) {
-			throw new Nette\NotSupportedException('SQLiteJournal requires PHP extension pdo_sqlite which is not loaded.');
-		}
 		$this->path = $path;
 	}
 
 
 	private function open()
 	{
+		if (!extension_loaded('pdo_sqlite')) {
+			throw new Nette\NotSupportedException('SQLiteJournal requires PHP extension pdo_sqlite which is not loaded.');
+		}
+
 		if ($this->path !== ':memory:' && !is_file($this->path)) {
 			touch($this->path); // ensures ordinary file permissions
 		}