diff --git a/esphome/components/bluetooth_proxy/__init__.py b/esphome/components/bluetooth_proxy/__init__.py
index f1b9ab3a2a..4673620ed9 100644
--- a/esphome/components/bluetooth_proxy/__init__.py
+++ b/esphome/components/bluetooth_proxy/__init__.py
@@ -62,9 +62,7 @@ def validate_connections(config):
                 "      type: esp-idf\n"
                 "\n"
                 "For detailed migration instructions, see:\n"
-                + color(
-                    AnsiFore.BLUE, "https://esphome.io/guides/esp32_arduino_to_idf.html"
-                )
+                f"{color(AnsiFore.BLUE, 'https://esphome.io/guides/esp32_arduino_to_idf.html')}"
             )
 
         return {