diff --git a/Netdisco/Changes b/Netdisco/Changes
index 8d295f1f..71d25ef9 100644
--- a/Netdisco/Changes
+++ b/Netdisco/Changes
@@ -33,6 +33,7 @@
   * Clean up duplicate node entries on vlan 0
   * NBTname search with wildcards fixed
   * Update Sourceforge links in metadata, add DESCRIPTION for CPAN (N. Bowers)
+  * [#131] More correct network space utilization (M. Kosmach)
 
 2.028013 - 2014-07-31
 
diff --git a/Netdisco/lib/App/Netdisco/DB/Result/Virtual/SubnetUtilization.pm b/Netdisco/lib/App/Netdisco/DB/Result/Virtual/SubnetUtilization.pm
index 99bb3e60..1ce4d9da 100644
--- a/Netdisco/lib/App/Netdisco/DB/Result/Virtual/SubnetUtilization.pm
+++ b/Netdisco/lib/App/Netdisco/DB/Result/Virtual/SubnetUtilization.pm
@@ -14,7 +14,7 @@ __PACKAGE__->result_source_instance->view_definition(<<'ENDSQL');
   SELECT net as subnet,
          power(2, (32 - masklen(net))) as subnet_size,
          count(DISTINCT ip) as active,
-         round(100 * count(DISTINCT ip) / power(2, (32 - masklen(net)))) as percent
+         round(100 * count(DISTINCT ip) / (power(2, (32 - masklen(net))) - 2)) as percent
     FROM (
       SELECT DISTINCT net, ni.ip
         FROM subnets s1, node_ip ni