diff --git a/homeassistant/components/local_calendar/__init__.py b/homeassistant/components/local_calendar/__init__.py
index 23c0c6a62d1f..3d05a806fd62 100644
--- a/homeassistant/components/local_calendar/__init__.py
+++ b/homeassistant/components/local_calendar/__init__.py
@@ -34,7 +34,7 @@ async def async_setup_entry(
     try:
         await store.async_load()
     except OSError as err:
-        raise ConfigEntryNotReady("Failed to load file {path}: {err}") from err
+        raise ConfigEntryNotReady(f"Failed to load file {path}: {err}") from err
 
     entry.runtime_data = store