diff --git a/xCAT-rmc/xCAT-rmc.spec b/xCAT-rmc/xCAT-rmc.spec
index f37c2e805..722aeee4f 100644
--- a/xCAT-rmc/xCAT-rmc.spec
+++ b/xCAT-rmc/xCAT-rmc.spec
@@ -58,26 +58,14 @@ rm -rf $RPM_BUILD_ROOT
 %post
 %ifos linux
   if [ -f "/proc/cmdline" ]; then   # prevent running it during install into chroot image
-    tmp=`rpm -q xCAT`
-    if [ $? -eq 0 ]; then
+    if [ -f $RPM_INSTALL_PREFIX0/sbin/xcatd  ]; then
       /etc/init.d/xcatd restart
-    else 
-      tmp=`rpm -q xCATsn`
-      if [ $? -eq 0 ]; then
-        /etc/init.d/xcatd restart
-      fi
     fi
   fi
 %else
   #restart the xcatd on if xCAT or xCATsn is installed already
-  tmp=`rpm -q xCAT`
-  if [ $? -eq 0 ]; then
+  if [ -f $RPM_INSTALL_PREFIX0/sbin/xcatd  ]; then
     XCATROOT=$RPM_INSTALL_PREFIX0 $RPM_INSTALL_PREFIX0/sbin/xcatstart
-  else 
-    tmp=`rpm -q xCATsn`
-    if [ $? -eq 0 ]; then
-      XCATROOT=$RPM_INSTALL_PREFIX0 $RPM_INSTALL_PREFIX0/sbin/xcatstart
-    fi
   fi
 %endif