diff --git a/plugins/mysql/mysql_slave b/plugins/mysql/mysql_slave
index b94d4581..5541a44a 100755
--- a/plugins/mysql/mysql_slave
+++ b/plugins/mysql/mysql_slave
@@ -65,9 +65,11 @@ my $seconds = 0;
 my (@infos,$info,$i_seconds);
 
 my $info = `$COMMAND`;
-$info =~ /: (\d+)/;
-
-print("seconds.value $1\n");
+if($info =~ /: (\d+)/) {
+  print("seconds.value $1\n");
+} else {
+  print("seconds.value U\n");
+}
 
 
 sub print_config {