diff --git a/plugins/router/mikrotik_system b/plugins/router/mikrotik_system
index b5e3d4ac..40be3f9e 100755
--- a/plugins/router/mikrotik_system
+++ b/plugins/router/mikrotik_system
@@ -164,7 +164,7 @@ function get_bad_blocks_label {
       print "graph_category mikrotik";
       print "graph_args -l 0 --upper-limit 5";
       print "bad_blocks.label bad_blocks";
-      print "bad_blocks.warning 3;
+      print "bad_blocks.warning 3";
       print "bad_blocks.critical 4";
       print "graph_info Percentage of Bad Blocks."
       }'