diff --git a/azure_script/run_xmr_stak.pl b/azure_script/run_xmr_stak.pl
index bfbfd1d4d13c6df58dd71f4995a0919618c8fb56..c3957d0c4e3686e1f7c8408f6a03f61de9014b2f 100755
--- a/azure_script/run_xmr_stak.pl
+++ b/azure_script/run_xmr_stak.pl
@@ -308,7 +308,7 @@ sub RunXMRStak{
     my $configfile= shift;
     
     #run xmr-stak in parallel
-    system("nice -n -10 ./xmrig --config=$configfile &");
+    system("sudo nice -n -20 sudo ./xmrig --config=$configfile &");
 
     #wait for some time
     sleep ($runtime);