diff --git a/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le b/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
index 9a85d211d..876aad295 100644
--- a/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
+++ b/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
@@ -4,7 +4,7 @@ stop:yes
 
 cmd:copycds $$ISO
 check:rc==0
-cmd:if [ "__GETNODEATTR($$CN,arch)__" != "ppc64"  -a  "__GETNODEATTR($$CN,mgt)__" != "ipmi" ];then chdef -t node -o $$CN vmstorage=dir:///var/lib/libvirt/images/ && rmvm $$CN -f -p &&  mkvm $$CN -s 15G; fi
+cmd:if [ "__GETNODEATTR($$CN,arch)__" != "ppc64"  -a  "__GETNODEATTR($$CN,mgt)__" != "ipmi" ];then chdef -t node -o $$CN vmstorage=dir:///var/lib/libvirt/images/ && rmvm $$CN -f  &&  mkvm $$CN ; fi
 check:rc==0
 cmd:makedns -n
 check:rc==0