diff --git a/bumblebee/modules/docker_ps.py b/bumblebee/modules/docker_ps.py
index c36c0e7..073c140 100644
--- a/bumblebee/modules/docker_ps.py
+++ b/bumblebee/modules/docker_ps.py
@@ -21,14 +21,25 @@ import bumblebee.engine
 
 class Module(bumblebee.engine.Module):
     def __init__(self, engine, config):
-        widget = bumblebee.output.Widget(full_text=self.status)
-        super(Module, self).__init__(engine, config, widget)
+        widgets = bumblebee.output.Widget(full_text=self.status)
+        super(Module, self).__init__(engine, config, widgets)
         self._status = self.status
+        self._state = self.state
 
     def update(self, widgets):
         self._status = self.status
+        self._state = self.state
 
-    def status(self, _):
+    def state(self, widget):
+        state = []
+        status = self.status(widget)
+        if status == "OK - 0":
+            state.append("warning")
+        elif  status in ["n/a", "Daemon off"]:
+            state.append("critical")
+        return state
+
+    def status(self, widget):
         try:
             cli = docker.DockerClient(base_url='unix://var/run/docker.sock')
             cli.ping()