diff --git a/lib/refrepo/gen/wiki/generators/hardware.rb b/lib/refrepo/gen/wiki/generators/hardware.rb
index 7774619f9d29c2c9ce3db93bb78bb2448b254274..2cdd6ff43c775b1f0131b5931d73aa478e463ffa 100644
--- a/lib/refrepo/gen/wiki/generators/hardware.rb
+++ b/lib/refrepo/gen/wiki/generators/hardware.rb
@@ -513,7 +513,7 @@ class G5KHardwareGenerator < WikiGenerator
 
             interfaces = {}
             interfaces['details'] = node_interfaces.map{ |v| v['name'] + " (#{v['sriov_totalvfs']} VFs)" }.sort.join(', ')
-            interfaces['vfs_sum'] = node_interfaces.map{ |v| v['sriov_totalvfs'] }.sum
+            interfaces['vfs_sum'] = node_interfaces.map{ |v| v['sriov_totalvfs'] }.inject(0,:+)
             interface_add(network_interfaces, node_uid, interfaces) if node_interfaces.count > 0
           end
         }