diff --git a/glances/plugins/diskio/__init__.py b/glances/plugins/diskio/__init__.py
index d500bf17..cbc9f520 100644
--- a/glances/plugins/diskio/__init__.py
+++ b/glances/plugins/diskio/__init__.py
@@ -12,7 +12,6 @@ from __future__ import unicode_literals
 
 from glances.logger import logger
 from glances.globals import nativestr
-from glances.timer import getTimeSinceLastUpdate
 from glances.plugins.plugin.model import GlancesPluginModel
 
 import psutil