diff --git a/esphome/const.py b/esphome/const.py
index 95e00bdca0..0c4c5a22e8 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -12,7 +12,7 @@ TARGET_PLATFORMS = [PLATFORM_ESP32, PLATFORM_ESP8266, PLATFORM_RP2040]
 
 SOURCE_FILE_EXTENSIONS = {".cpp", ".hpp", ".h", ".c", ".tcc", ".ino"}
 HEADER_FILE_EXTENSIONS = {".h", ".hpp", ".tcc"}
-SECRETS_FILES = {"secrets.yaml", "secrets.yml"}
+SECRETS_FILES = ("secrets.yaml", "secrets.yml")
 
 
 CONF_ABOVE = "above"