diff --git a/xCAT-server/lib/xcat/plugins/sles.pm b/xCAT-server/lib/xcat/plugins/sles.pm
index c029cc893..59cf31b8d 100644
--- a/xCAT-server/lib/xcat/plugins/sles.pm
+++ b/xCAT-server/lib/xcat/plugins/sles.pm
@@ -286,6 +286,31 @@ sub mkinstall
             next;
         }
 
+	    #before setting sles11 full installation, check if stunnel is in the right place
+	    if ($os =~ /sles11/ && $arch eq "ppc64") {
+            unless ( -d "/install/post/otherpkgs/sles11/ppc64" )
+            {
+                $callback->(
+                    {
+                        error => ["No such a directory: /install/post/otherpkgs/sles11/ppc64"],
+                        errorcode => [1]
+                    }
+                );
+            }
+            opendir(DIR, "/install/post/otherpkgs/sles11/ppc64");
+            my @tmp = grep { /^stunnel.*\.ppc64\.rpm$/ } readdir(DIR);
+            closedir DIR;
+            unless ( scalar @tmp> 0 && -r "/install/post/otherpkgs/sles11/ppc64/$rpms[0]" )
+            {
+                $callback->(
+                    {
+                        error => ["No stunnel rpm package in /install/post/otherpkgs/sles11/ppc64"],
+                        errorcode => [1]
+                    }
+                );
+            }
+	    }
+
         #Call the Template class to do substitution to produce a kickstart file in the autoinst dir
         my $tmperr;
         if (-r "$tmplfile")
@@ -298,7 +323,7 @@ sub mkinstall
                          );
 			#sles11 cannot find <pattern>base-64bit</pattern> and
 			#<package>stunnel</package> in the autoyast file
-			if($os eq 'sles11') {
+			if($os =~ /sles11/) {
 				my $SLES_YAST_FILE;
 				open SLES_YAST_FILE, "/install/autoinst/$node"||\
 				return "Cannot open autoyast file for SLES11\n";