diff --git a/superset/db_engine_specs/base.py b/superset/db_engine_specs/base.py
index 0bacf30fa6..0d778de439 100644
--- a/superset/db_engine_specs/base.py
+++ b/superset/db_engine_specs/base.py
@@ -106,7 +106,7 @@ builtin_time_grains: dict[str | None, str] = {
     TimeGrainConstants.WEEK_STARTING_SUNDAY: __("Week starting Sunday"),
     TimeGrainConstants.WEEK_STARTING_MONDAY: __("Week starting Monday"),
     TimeGrainConstants.WEEK_ENDING_SATURDAY: __("Week ending Saturday"),
-    TimeGrainConstants.WEEK_ENDING_SUNDAY: __("Week_ending Sunday"),
+    TimeGrainConstants.WEEK_ENDING_SUNDAY: __("Week ending Sunday"),
 }