diff --git a/homeassistant/core.py b/homeassistant/core.py
index f7847228338..50c805e2548 100644
--- a/homeassistant/core.py
+++ b/homeassistant/core.py
@@ -109,7 +109,7 @@ class HomeAssistant(object):
         else:
             self.loop = loop or asyncio.get_event_loop()
 
-        self.executor = ThreadPoolExecutor(max_workers=5)
+        self.executor = ThreadPoolExecutor(max_workers=EXECUTOR_POOL_SIZE)
         self.loop.set_default_executor(self.executor)
         self.loop.set_exception_handler(self._async_exception_handler)
         self._pending_tasks = []