diff --git a/homeassistant/components/unifi/config_flow.py b/homeassistant/components/unifi/config_flow.py
index e703f393d68..af4e0fde137 100644
--- a/homeassistant/components/unifi/config_flow.py
+++ b/homeassistant/components/unifi/config_flow.py
@@ -164,10 +164,14 @@ class UnifiFlowHandler(ConfigFlow, domain=UNIFI_DOMAIN):
                 abort_reason = "reauth_successful"
 
             if config_entry:
-                hub = config_entry.runtime_data
+                try:
+                    hub = config_entry.runtime_data
 
-                if hub and hub.available:
-                    return self.async_abort(reason="already_configured")
+                    if hub and hub.available:
+                        return self.async_abort(reason="already_configured")
+
+                except AttributeError:
+                    pass
 
                 return self.async_update_reload_and_abort(
                     config_entry, data=self.config, reason=abort_reason