diff --git a/homeassistant/components/tuya/vacuum.py b/homeassistant/components/tuya/vacuum.py
index c10c6a05980..832128a8b3e 100644
--- a/homeassistant/components/tuya/vacuum.py
+++ b/homeassistant/components/tuya/vacuum.py
@@ -200,8 +200,10 @@ class TuyaVacuumEntity(TuyaEntity, StateVacuumEntity):
         """Set fan speed."""
         self._send_command([{"code": DPCode.SUCTION, "value": fan_speed}])
 
-    def send_command(self, command: str, params: str = None, **kwargs: Any) -> None:
+    def send_command(
+        self, command: str, params: list[str] | None = None, **kwargs: Any
+    ) -> None:
         """Send raw command."""
-        if params is None:
+        if not params:
             raise ValueError("Params cannot be omitted for Tuya vacuum commands")
-        self._send_command([{"code": command, "value": params}])
+        self._send_command([{"code": command, "value": params[0]}])