diff --git a/xCAT-server-2.0/lib/xcat/plugins/blade.pm b/xCAT-server-2.0/lib/xcat/plugins/blade.pm
index 60d4c8131..a4b087d63 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/blade.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/blade.pm
@@ -1239,7 +1239,7 @@ sub build_depend {
   my %mpa_hash;
 
   if (!defined($depstab)) {
-    return(\%dp);
+    return([\%dp]);
   }
   unless ($mptab) {
     return("Cannot open mp table");