diff --git a/klippy/gcode.py b/klippy/gcode.py
index c9f8a81b..22ec6606 100644
--- a/klippy/gcode.py
+++ b/klippy/gcode.py
@@ -437,7 +437,7 @@ class GCodeParser:
             gcmd.ack("T:0")
             return
         if not self.is_printer_ready:
-            raise gcmd.error(self.printer.get_state_message())
+            raise gcmd.error(self.printer.get_state_message()[0])
             return
         if not cmd:
             logging.debug(gcmd.get_commandline())
@@ -696,7 +696,7 @@ class GCodeParser:
         if self.is_printer_ready:
             self._respond_state("Ready")
             return
-        msg = self.printer.get_state_message()
+        msg = self.printer.get_state_message()[0]
         msg = msg.rstrip() + "\nKlipper state: Not ready"
         raise gcmd.error(msg)
     cmd_HELP_when_not_ready = True
diff --git a/klippy/klippy.py b/klippy/klippy.py
index 1da0a028..cd22ace9 100644
--- a/klippy/klippy.py
+++ b/klippy/klippy.py
@@ -65,7 +65,13 @@ class Printer:
     def get_reactor(self):
         return self.reactor
     def get_state_message(self):
-        return self.state_message
+        if self.state_message == message_ready:
+            category = "ready"
+        elif self.state_message == message_startup:
+            category = "startup"
+        else:
+            category = "error"
+        return self.state_message, category
     def is_shutdown(self):
         return self.in_shutdown_state
     def _set_state(self, msg):
diff --git a/klippy/webhooks.py b/klippy/webhooks.py
index 6c44b012..0379e3ab 100644
--- a/klippy/webhooks.py
+++ b/klippy/webhooks.py
@@ -8,7 +8,6 @@ import socket
 import errno
 import json
 import homing
-from klippy import message_startup, message_ready
 
 SOCKET_LOCATION = "/tmp/moonraker"
 
@@ -252,15 +251,14 @@ class WebHooks:
         if web_request.get_method() != 'GET':
             raise web_request.error("Invalid Request Method")
         start_args = self.printer.get_start_args()
-        state_message = self.printer.get_state_message()
+        state_message, msg_type = self.printer.get_state_message()
         version = start_args['software_version']
         cpu_info = start_args['cpu_info']
-        error = state_message != message_startup and \
-            state_message != message_ready
+        error = msg_type == "error"
         web_request.send(
             {'cpu': cpu_info, 'version': version,
              'hostname': socket.gethostname(),
-             'is_ready': state_message == message_ready,
+             'is_ready': msg_type == "ready",
              'error_detected': error,
              'message': state_message})