diff --git a/lib/base.php b/lib/base.php
index d1ff9fe799bf0c81779e1a4887cea2439f084619..b7f19c96406d6efa3ee71b87c89f058b4f4f5e3d 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -654,7 +654,7 @@ class OC {
 
 		self::registerCacheHooks();
 		self::registerFilesystemHooks();
-		if (\OC::$server->getSystemConfig()->getValue('enable_previews', false)) {
+		if (\OC::$server->getSystemConfig()->getValue('enable_previews', true)) {
 			self::registerPreviewHooks();
 		}	
 		self::registerShareHooks();