diff --git a/watcher/decision_engine/strategy/strategies/workload_balance.py b/watcher/decision_engine/strategy/strategies/workload_balance.py
index bc3b6bffe..f54792f4c 100644
--- a/watcher/decision_engine/strategy/strategies/workload_balance.py
+++ b/watcher/decision_engine/strategy/strategies/workload_balance.py
@@ -205,9 +205,9 @@ class WorkloadBalance(base.WorkloadStabilizationBaseStrategy):
             # calculate the available resources
             cores_used, mem_used, disk_used = self.calculate_used_resource(
                 host)
-            cores_available = host.vcpus - cores_used
-            disk_available = host.disk - disk_used
-            mem_available = host.memory - mem_used
+            cores_available = host.vcpu_capacity - cores_used
+            disk_available = host.disk_gb_capacity - disk_used
+            mem_available = host.memory_mb_capacity - mem_used
             if (cores_available >= required_cores and
                     mem_available >= required_mem and
                     disk_available >= required_disk):
diff --git a/watcher/tests/decision_engine/model/data/scenario_4_with_1_node_no_instance.xml b/watcher/tests/decision_engine/model/data/scenario_4_with_1_node_no_instance.xml
index 722b59250..1132e698c 100644
--- a/watcher/tests/decision_engine/model/data/scenario_4_with_1_node_no_instance.xml
+++ b/watcher/tests/decision_engine/model/data/scenario_4_with_1_node_no_instance.xml
@@ -1,3 +1,3 @@
 <ModelRoot>
-  <ComputeNode name="" uuid="Node_0" status="enabled" state="up" id="0" hostname="hostname_0" vcpus="1" disk="1" disk_capacity="1" memory="1"/>
+  <ComputeNode name="" uuid="Node_0" status="enabled" state="up" id="0" hostname="hostname_0" vcpus="1" vcpu_reserved="0" vcpu_ratio="1" disk="1" disk_gb_reserved="0" disk_ratio="1" disk_capacity="1" memory="1" memory_mb_reserved="0" memory_ratio="1"/>
 </ModelRoot>
diff --git a/watcher/tests/decision_engine/model/data/scenario_6_with_2_nodes.xml b/watcher/tests/decision_engine/model/data/scenario_6_with_2_nodes.xml
index 83189fc32..3d2ac24c6 100644
--- a/watcher/tests/decision_engine/model/data/scenario_6_with_2_nodes.xml
+++ b/watcher/tests/decision_engine/model/data/scenario_6_with_2_nodes.xml
@@ -1,9 +1,9 @@
 <ModelRoot>
-  <ComputeNode uuid="Node_0" status="enabled" state="up" id="0" hostname="hostname_0" vcpus="40" disk="250" disk_capacity="250" memory="132">
+  <ComputeNode uuid="Node_0" status="enabled" state="up" id="0" hostname="hostname_0" vcpus="40" vcpu_reserved="0" vcpu_ratio="1" disk="250" disk_gb_reserved="0" disk_ratio="1" disk_capacity="250" memory="132" memory_mb_reserved="0" memory_ratio="1">
     <Instance watcher_exclude="False" state="active" name="" uuid="73b09e16-35b7-4922-804e-e8f5d9b740fc" vcpus="10" disk="20" disk_capacity="20" memory="32" metadata='{"optimize": true,"top": "floor", "nested": {"x": "y"}}' project_id="91FFFE30-78A0-4152-ACD2-8310FF274DC9"/>
     <Instance watcher_exclude="False" state="active" name="" uuid="INSTANCE_1" vcpus="10" disk="20" disk_capacity="20" memory="32" metadata='{"optimize": true,"top": "floor", "nested": {"x": "y"}}' project_id="91FFFE30-78A0-4152-ACD2-8310FF274DC9"/>
   </ComputeNode>
-  <ComputeNode uuid="Node_1" status="enabled" state="up" id="1" hostname="hostname_1" vcpus="40" disk="250" disk_capacity="250" memory="132">
+  <ComputeNode uuid="Node_1" status="enabled" state="up" id="1" hostname="hostname_1" vcpus="40" vcpu_reserved="0" vcpu_ratio="1" disk="250" disk_gb_reserved="0" disk_ratio="1" disk_capacity="250" memory="132" memory_mb_reserved="0" memory_ratio="1">
     <Instance watcher_exclude="False" state="active" name="" uuid="INSTANCE_3" vcpus="10" disk="20" disk_capacity="20" memory="32" metadata='{"optimize": true,"top": "floor", "nested": {"x": "y"}}' project_id="91FFFE30-78A0-4152-ACD2-8310FF274DC9"/>
     <Instance watcher_exclude="False" state="active" name="" uuid="INSTANCE_4" vcpus="10" disk="20" disk_capacity="20" memory="32" metadata='{"optimize": true,"top": "floor", "nested": {"x": "y"}}' project_id="91FFFE30-78A0-4152-ACD2-8310FF274DC9"/>
   </ComputeNode>