diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/_metrics/aggregation.py b/opentelemetry-sdk/src/opentelemetry/sdk/_metrics/aggregation.py
index 9f1bee7a388..bb4747e3d8d 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/_metrics/aggregation.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/_metrics/aggregation.py
@@ -204,9 +204,9 @@ def collect(self) -> Optional[Histogram]:
 
 
 def _convert_aggregation_temporality(
-    previous_point: Optional[_PointVarT],
-    current_point: _PointVarT,
     aggregation_temporality: AggregationTemporality,
+    current_point: _PointVarT,
+    previous_point: Optional[_PointVarT] = None,
 ) -> _PointVarT:
     """Converts `current_point` to the requested `aggregation_temporality`
     given the `previous_point`.