diff --git a/xCAT-server/sbin/pcp_collect b/xCAT-server/sbin/pcp_collect
index 7facf4ccd..6eb25da60 100755
--- a/xCAT-server/sbin/pcp_collect
+++ b/xCAT-server/sbin/pcp_collect
@@ -38,7 +38,7 @@ sub  performance
             { #opening foreach1
 	      #print "opening foreach1 \n";
               #print "key is: $key \n";
-              my @key_a=split(',', $key);
+              my @key_a=split(':', $key);
 	      if (! $iphash{$key_a[0]}) { next;}
               my $mon_nodes=$noderef->{$key};
 
@@ -192,4 +192,4 @@ sub  performance
                      } #closing if nodestatusmon
 	    } #closing if count_child 1   
 			
-        } # closing subroutine
\ No newline at end of file
+        } # closing subroutine