diff --git a/awx/main/isolated/manager.py b/awx/main/isolated/manager.py
index 7872b85d4b..7bb328ac5f 100644
--- a/awx/main/isolated/manager.py
+++ b/awx/main/isolated/manager.py
@@ -317,6 +317,7 @@ class IsolatedManager(object):
         Performs save on each instance to update its capacity.
         '''
         try:
+            instance_qs = instance_qs.filter(enabled=True)
             private_data_dir = tempfile.mkdtemp(
                 prefix='awx_iso_heartbeat_',
                 dir=settings.AWX_PROOT_BASE_PATH