diff --git a/neat/globals/manager.py b/neat/globals/manager.py
index 3ca930c..c171697 100644
--- a/neat/globals/manager.py
+++ b/neat/globals/manager.py
@@ -537,7 +537,7 @@ def execute_overload(config, state, host, vm_uuids):
 
     for vm in vms_cpu.keys():
         if not vm in vms_ram:
-            del vms_cpu[i]
+            del vms_cpu[vm]
 
     time_step = int(config['data_collector_interval'])
     migration_time = common.calculate_migration_time(