diff --git a/homeassistant/components/tts/__init__.py b/homeassistant/components/tts/__init__.py
index 67bc933a530..f9b07a98595 100644
--- a/homeassistant/components/tts/__init__.py
+++ b/homeassistant/components/tts/__init__.py
@@ -209,7 +209,7 @@ async def async_setup(hass, config):
 
         # Register the service description
         service_desc = {
-            CONF_NAME: "Say an TTS message with {p_type}",
+            CONF_NAME: f"Say an TTS message with {p_type}",
             CONF_DESCRIPTION: f"Say something using text-to-speech on a media player with {p_type}.",
             CONF_FIELDS: services_dict[SERVICE_SAY][CONF_FIELDS],
         }