diff --git a/ipx800/ipx800.py b/ipx800/ipx800.py
index ae8555e..b38fa73 100644
--- a/ipx800/ipx800.py
+++ b/ipx800/ipx800.py
@@ -101,13 +101,13 @@ def on(self) -> bool:
 
     def off(self) -> bool:
         """Turn off and return True if it was successful."""
-        params = {"Clear{self._code}": self.id}
+        params = {f"Clear{self._code}": self.id}
         self._request(params)
         return True
 
     def toggle(self) -> bool:
         """Toggle and return True if it was successful."""
-        params = {"Toggle{self._code}": self.id}
+        params = {f"Toggle{self._code}": self.id}
         self._request(params)
         return True