diff --git a/src/onedb/fsck/network.rb b/src/onedb/fsck/network.rb
index 4e085a47d7..f364f4e404 100644
--- a/src/onedb/fsck/network.rb
+++ b/src/onedb/fsck/network.rb
@@ -225,6 +225,14 @@ module OneDBFsck
 
                 leases = allocated.scan(/(\d+) (\d+)/)
 
+                size = net_ar.at_xpath("SIZE").text.to_i
+                if leases.length > size
+                    log_error("VNet #{oid} AR #{ar_id} has more allocated leases (#{used_leases}) than"<<
+                                "size (#{size}) that has the AR")
+                    error = true
+                    net_ar.at_xpath("SIZE").content = leases.length.to_s
+                end
+
                 new_leases = []
 
                 leases.each do |lease_str|