diff --git a/lib/private/memcache/xcache.php b/lib/private/memcache/xcache.php
index eea55fefc4..e80901faad 100644
--- a/lib/private/memcache/xcache.php
+++ b/lib/private/memcache/xcache.php
@@ -125,7 +125,7 @@ class XCache extends Cache implements IMemcache {
 			// AND administration functions are password-protected.
 			return false;
 		}
-		$var_size = \OC::$server->getIniWrapper()->getNumeric('xcache.var_size');
+		$var_size = \OC::$server->getIniWrapper()->getBytes('xcache.var_size');
 		if (!$var_size) {
 			return false;
 		}