diff --git a/tap_dynamodb/aws_authenticators.py b/tap_dynamodb/aws_authenticators.py
index 74b33af..6b46f18 100644
--- a/tap_dynamodb/aws_authenticators.py
+++ b/tap_dynamodb/aws_authenticators.py
@@ -109,4 +109,5 @@ def _assume_role(self, session, role_arn):
             aws_access_key_id=response["Credentials"]["AccessKeyId"],
             aws_secret_access_key=response["Credentials"]["SecretAccessKey"],
             aws_session_token=response["Credentials"]["SessionToken"],
+            region_name=self.aws_default_region,
         )
diff --git a/tap_dynamodb/dynamo.py b/tap_dynamodb/dynamo.py
index 1e86112..5a530da 100644
--- a/tap_dynamodb/dynamo.py
+++ b/tap_dynamodb/dynamo.py
@@ -54,7 +54,8 @@ def get_items_iter(
                 done = start_key is None
         except ClientError as err:
             self.logger.error(
-                "Couldn't scan for movies. Here's why: %s: %s",
+                "Couldn't scan for %s. Here's why: %s: %s",
+                table_name,
                 err.response["Error"]["Code"],
                 err.response["Error"]["Message"],
             )
diff --git a/tap_dynamodb/tap.py b/tap_dynamodb/tap.py
index dd8f58a..b48aee6 100644
--- a/tap_dynamodb/tap.py
+++ b/tap_dynamodb/tap.py
@@ -83,7 +83,7 @@ def discover_streams(self) -> list[streams.TableStream]:
         """
         obj = DynamoDB(self.config)
         discovered_streams = []
-        for table_name in obj.list_tables(self.config.get("tables")):
+        for table_name in self.config.get("tables") or obj.list_tables():
             try:
                 stream = streams.TableStream(
                     tap=self,