diff --git a/API.md b/API.md
index 982a60312..f22407a32 100644
--- a/API.md
+++ b/API.md
@@ -471,7 +471,7 @@ Get all available addons.
     "available": "bool",
     "arch": ["armhf", "aarch64", "i386", "amd64"],
     "machine": "[raspberrypi2, tinker]",
-    "homeassistant": "min Home Assistant version",
+    "homeassistant": "null|min Home Assistant version",
     "repository": "12345678|null",
     "version": "null|VERSION_INSTALLED",
     "last_version": "LAST_VERSION",
@@ -511,8 +511,8 @@ Get all available addons.
     "discovery": "['service']",
     "ip_address": "ip address",
     "ingress": "bool",
-    "ingress_entry": "/api/hassio_ingress/slug",
-    "ingress_url": "/api/hassio_ingress/slug/entry.html"
+    "ingress_entry": "null|/api/hassio_ingress/slug",
+    "ingress_url": "null|/api/hassio_ingress/slug/entry.html"
 }
 ```
 
diff --git a/hassio/addons/addon.py b/hassio/addons/addon.py
index 7952fbd10..63293eb87 100644
--- a/hassio/addons/addon.py
+++ b/hassio/addons/addon.py
@@ -391,8 +391,7 @@ class Addon(CoreSysAttributes):
     @property
     def ingress_url(self):
         """Return URL to ingress url."""
-        # Use ingress
-        if not self.with_ingress:
+        if not self.is_installed or not self.with_ingress:
             return None
 
         webui = f"/api/hassio_ingress/{self.ingress_token}/"