diff --git a/pyhwmon/hwmon.py b/pyhwmon/hwmon.py
index 12cfa05..b92a7d6 100644
--- a/pyhwmon/hwmon.py
+++ b/pyhwmon/hwmon.py
@@ -44,7 +44,7 @@
         self.sensors = {}
         self.hwmon_root = {}
 
-	if have_system:
+        if have_system:
             self.scanDirectory()
             gobject.timeout_add(DIR_POLL_INTERVAL, self.scanDirectory)