diff --git a/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py b/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
index 07cc890..3cc5ca4 100644
--- a/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
+++ b/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
@@ -94,3 +94,14 @@
         'format': 'data-time'
     }
 }
+
+power_state = {
+    'type': 'integer',
+    # 0: NOSTATE
+    # 1: RUNNING
+    # 3: PAUSED
+    # 4: SHUTDOWN
+    # 6: CRASHED
+    # 7: SUSPENDED
+    'enum': [0, 1, 3, 4, 6, 7]
+}
diff --git a/tempest/lib/api_schema/response/compute/v2_1/servers.py b/tempest/lib/api_schema/response/compute/v2_1/servers.py
index 44497db..63e8467 100644
--- a/tempest/lib/api_schema/response/compute/v2_1/servers.py
+++ b/tempest/lib/api_schema/response/compute/v2_1/servers.py
@@ -170,7 +170,7 @@
     # attributes.
     'OS-EXT-STS:task_state': {'type': ['string', 'null']},
     'OS-EXT-STS:vm_state': {'type': 'string'},
-    'OS-EXT-STS:power_state': {'type': 'integer'},
+    'OS-EXT-STS:power_state': parameter_types.power_state,
     'OS-EXT-SRV-ATTR:host': {'type': ['string', 'null']},
     'OS-EXT-SRV-ATTR:instance_name': {'type': 'string'},
     'OS-EXT-SRV-ATTR:hypervisor_hostname': {'type': ['string', 'null']},
diff --git a/tempest/lib/api_schema/response/compute/v2_16/servers.py b/tempest/lib/api_schema/response/compute/v2_16/servers.py
index 6868110..3eb658f 100644
--- a/tempest/lib/api_schema/response/compute/v2_16/servers.py
+++ b/tempest/lib/api_schema/response/compute/v2_16/servers.py
@@ -77,7 +77,7 @@
         'OS-EXT-AZ:availability_zone': {'type': 'string'},
         'OS-EXT-STS:task_state': {'type': ['string', 'null']},
         'OS-EXT-STS:vm_state': {'type': 'string'},
-        'OS-EXT-STS:power_state': {'type': 'integer'},
+        'OS-EXT-STS:power_state': parameter_types.power_state,
         'OS-EXT-SRV-ATTR:host': {'type': ['string', 'null']},
         'OS-EXT-SRV-ATTR:instance_name': {'type': 'string'},
         'OS-EXT-SRV-ATTR:hypervisor_hostname': {'type': ['string', 'null']},
diff --git a/tempest/lib/api_schema/response/compute/v2_3/servers.py b/tempest/lib/api_schema/response/compute/v2_3/servers.py
index ee16333..f24103e 100644
--- a/tempest/lib/api_schema/response/compute/v2_3/servers.py
+++ b/tempest/lib/api_schema/response/compute/v2_3/servers.py
@@ -85,7 +85,7 @@
         'OS-EXT-AZ:availability_zone': {'type': 'string'},
         'OS-EXT-STS:task_state': {'type': ['string', 'null']},
         'OS-EXT-STS:vm_state': {'type': 'string'},
-        'OS-EXT-STS:power_state': {'type': 'integer'},
+        'OS-EXT-STS:power_state': parameter_types.power_state,
         'OS-EXT-SRV-ATTR:host': {'type': ['string', 'null']},
         'OS-EXT-SRV-ATTR:instance_name': {'type': 'string'},
         'OS-EXT-SRV-ATTR:hypervisor_hostname': {'type': ['string', 'null']},