diff --git a/mikrotik_ b/mikrotik_
index 0a00219..6223e37 100755
--- a/mikrotik_
+++ b/mikrotik_
@@ -10,11 +10,13 @@ def config(name, port_max, ports_label):
     for port in range(1, port_max + 1):
         print(f"down{port}.label {ports_label[port - 1]}")
         print(f"down{port}.type DERIVE")
+        print(f"down{port}.min 0")
         print(f"down{port}.graph no")
         print(f"down{port}.cdef down{port},8,*")
     for port in range(1, port_max + 1):
         print(f"up{port}.label {ports_label[port - 1]}")
         print(f"up{port}.type DERIVE")
+        print(f"up{port}.min 0")
         print(f"up{port}.negative down{port}")
         print(f"up{port}.cdef up{port},8,*")