diff --git a/homeassistant/components/fastdotcom/config_flow.py b/homeassistant/components/fastdotcom/config_flow.py
index ec62c86d787..36b6f81ae5b 100644
--- a/homeassistant/components/fastdotcom/config_flow.py
+++ b/homeassistant/components/fastdotcom/config_flow.py
@@ -20,9 +20,6 @@ class FastdotcomConfigFlow(ConfigFlow, domain=DOMAIN):
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
-
         if user_input is not None:
             return self.async_create_entry(title=DEFAULT_NAME, data={})
 
diff --git a/homeassistant/components/fastdotcom/manifest.json b/homeassistant/components/fastdotcom/manifest.json
index 311f3000b1e..9e2e077858c 100644
--- a/homeassistant/components/fastdotcom/manifest.json
+++ b/homeassistant/components/fastdotcom/manifest.json
@@ -7,5 +7,6 @@
   "iot_class": "cloud_polling",
   "loggers": ["fastdotcom"],
   "quality_scale": "gold",
-  "requirements": ["fastdotcom==0.0.3"]
+  "requirements": ["fastdotcom==0.0.3"],
+  "single_config_entry": true
 }
diff --git a/homeassistant/generated/integrations.json b/homeassistant/generated/integrations.json
index a0cf46d7f1d..4792046411f 100644
--- a/homeassistant/generated/integrations.json
+++ b/homeassistant/generated/integrations.json
@@ -1760,7 +1760,8 @@
       "name": "Fast.com",
       "integration_type": "hub",
       "config_flow": true,
-      "iot_class": "cloud_polling"
+      "iot_class": "cloud_polling",
+      "single_config_entry": true
     },
     "feedreader": {
       "name": "Feedreader",