diff --git a/lib/private/setup.php b/lib/private/setup.php
index 044b57f6c8..84ac735f27 100644
--- a/lib/private/setup.php
+++ b/lib/private/setup.php
@@ -330,7 +330,7 @@ class Setup {
 
 			//try to write logtimezone
 			if (date_default_timezone_get()) {
-				OC_Config::setValue('logtimezone', date_default_timezone_get());
+				\OC_Config::setValue('logtimezone', date_default_timezone_get());
 			}
 
 			//and we are done