diff --git a/src/prefect/indicators/usage/u12.py b/src/prefect/indicators/usage/u12.py
index b68a0634..04885f3d 100644
--- a/src/prefect/indicators/usage/u12.py
+++ b/src/prefect/indicators/usage/u12.py
@@ -174,7 +174,7 @@ def u12_national(timespan: IndicatorTimeSpan) -> pd.DataFrame:
 )
 def calculate(
     timespan: IndicatorTimeSpan,
-    levels: List[Level] = [Level.NATIONAL, Level.REGION],
+    levels: List[Level],
     create_artifact: bool = False,
     chunk_size: int = 1000,
     format_pd: bool = False,
diff --git a/src/prefect/indicators/usage/u13.py b/src/prefect/indicators/usage/u13.py
index 4a8f280a..96621926 100644
--- a/src/prefect/indicators/usage/u13.py
+++ b/src/prefect/indicators/usage/u13.py
@@ -165,7 +165,7 @@ def u13_national(timespan: IndicatorTimeSpan) -> pd.DataFrame:
 )
 def calculate(
     timespan: IndicatorTimeSpan,
-    levels: List[Level] = [Level.NATIONAL, Level.REGION],
+    levels: List[Level],
     create_artifact: bool = False,
     chunk_size: int = 1000,
     format_pd: bool = False,