diff --git a/tests/test_commands.py b/tests/test_commands.py
index 705e09b2..d31c38a8 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -559,3 +559,19 @@ def test_neighbors_missing_payload():
         Src=0x821F,
         Status=t.ZDOStatus.NOT_SUPPORTED,
     )
+
+
+def test_routes_missing_payload():
+    frame = frames.GeneralFrame(
+        header=t.CommandHeader(
+            id=0xB2,
+            subsystem=t.Subsystem.ZDO,
+            type=t.CommandType.AREQ,
+        ),
+        data=b"\x85\xCC\x84",
+    )
+
+    assert c.ZDO.MgmtRtgRsp.Callback.from_frame(frame) == c.ZDO.MgmtRtgRsp.Callback(
+        Src=0xCC85,
+        Status=t.ZDOStatus.NOT_SUPPORTED,
+    )
diff --git a/zigpy_znp/commands/zdo.py b/zigpy_znp/commands/zdo.py
index 6c1abbe6..982ee5f8 100644
--- a/zigpy_znp/commands/zdo.py
+++ b/zigpy_znp/commands/zdo.py
@@ -1194,7 +1194,7 @@ class ZDO(t.CommandsBase, subsystem=t.Subsystem.ZDO):
             t.Param(
                 "Status", t.ZDOStatus, "Status is either Success (0) or Failure (1)"
             ),
-            t.Param("Routes", zigpy.zdo.types.Routes, "Routes"),
+            t.Param("Routes", zigpy.zdo.types.Routes, "Routes", optional=True),
         ),
     )