diff --git a/sentry_sdk/integrations/aws_lambda/_handler.py b/sentry_sdk/integrations/aws_lambda/_handler.py
index 89ba0089b7..7a825bed28 100644
--- a/sentry_sdk/integrations/aws_lambda/_handler.py
+++ b/sentry_sdk/integrations/aws_lambda/_handler.py
@@ -64,10 +64,8 @@ def sentry_handler(
 
         if isinstance(aws_event, list) and len(aws_event) >= 1:
             request_data = aws_event[0]
-            batch_size = len(aws_event)
         else:
             request_data = aws_event
-            batch_size = 1
 
         if not isinstance(request_data, dict):
             # If we're not dealing with a dictionary, we won't be able to get
@@ -160,7 +158,6 @@ def sentry_handler(
                 SPANDATA.SENTRY_SEGMENT_NAME_SOURCE: SegmentNameSource.COMPONENT,
                 SPANDATA.CLOUD_PROVIDER: CLOUD_PROVIDER,
                 SPANDATA.CLOUD_PLATFORM: CLOUD_PLATFORM,
-                SPANDATA.MESSAGING_BATCH_MESSAGE_COUNT: batch_size,
                 **header_attributes,
                 **additional_attributes,
             }
diff --git a/tests/integrations/aws_lambda/test_aws_lambda.py b/tests/integrations/aws_lambda/test_aws_lambda.py
index 2d7712b2d2..37dfbcac50 100644
--- a/tests/integrations/aws_lambda/test_aws_lambda.py
+++ b/tests/integrations/aws_lambda/test_aws_lambda.py
@@ -756,7 +756,7 @@ def test_no_error(lambda_client, test_environment):
     assert _get_span_attr(attrs, SPANDATA.AWS_LOG_STREAM_NAMES) == [
         LATEST_FUNCTION_VERSION
     ]
-    assert _get_span_attr(attrs, SPANDATA.MESSAGING_BATCH_MESSAGE_COUNT) == 1
+    assert SPANDATA.MESSAGING_BATCH_MESSAGE_COUNT not in attrs
 
 
 def test_error(lambda_client, test_environment):
@@ -810,7 +810,7 @@ def test_error(lambda_client, test_environment):
     assert _get_span_attr(attrs, SPANDATA.AWS_LOG_STREAM_NAMES) == [
         LATEST_FUNCTION_VERSION
     ]
-    assert _get_span_attr(attrs, SPANDATA.MESSAGING_BATCH_MESSAGE_COUNT) == 1
+    assert SPANDATA.MESSAGING_BATCH_MESSAGE_COUNT not in attrs
 
 
 def test_trace_continuation(lambda_client, test_environment):