diff --git a/nagios/check_modjk.py b/nagios/check_modjk.py
index 39f126d..7fee3a0 100644
--- a/nagios/check_modjk.py
+++ b/nagios/check_modjk.py
@@ -7,7 +7,6 @@ requires
   - Python >= 2.6
   - status worker enable
 '''
-from numpy.core.memmap import memmap
 
 from optparse import OptionParser
 import urllib2