diff --git a/src/Result/GetRecordsOutput.php b/src/Result/GetRecordsOutput.php
index 518dd03..fe77494 100644
--- a/src/Result/GetRecordsOutput.php
+++ b/src/Result/GetRecordsOutput.php
@@ -83,7 +83,7 @@ protected function populateResult(Response $response): void
     {
         $data = $response->toArray();
 
-        $this->records = $this->populateResultRecordList($data['Records']);
+        $this->records = $this->populateResultRecordList($data['Records'] ?? []);
         $this->nextShardIterator = isset($data['NextShardIterator']) ? (string) $data['NextShardIterator'] : null;
         $this->millisBehindLatest = isset($data['MillisBehindLatest']) ? (int) $data['MillisBehindLatest'] : null;
         $this->childShards = empty($data['ChildShards']) ? [] : $this->populateResultChildShardList($data['ChildShards']);
diff --git a/src/Result/ListStreamsOutput.php b/src/Result/ListStreamsOutput.php
index 95d2539..87eb679 100644
--- a/src/Result/ListStreamsOutput.php
+++ b/src/Result/ListStreamsOutput.php
@@ -185,7 +185,7 @@ protected function populateResult(Response $response): void
     {
         $data = $response->toArray();
 
-        $this->streamNames = $this->populateResultStreamNameList($data['StreamNames']);
+        $this->streamNames = $this->populateResultStreamNameList($data['StreamNames'] ?? []);
         $this->hasMoreStreams = filter_var($data['HasMoreStreams'], \FILTER_VALIDATE_BOOLEAN);
         $this->nextToken = isset($data['NextToken']) ? (string) $data['NextToken'] : null;
         $this->streamSummaries = empty($data['StreamSummaries']) ? [] : $this->populateResultStreamSummaryList($data['StreamSummaries']);
diff --git a/src/Result/ListTagsForStreamOutput.php b/src/Result/ListTagsForStreamOutput.php
index c63a8b9..4a04587 100644
--- a/src/Result/ListTagsForStreamOutput.php
+++ b/src/Result/ListTagsForStreamOutput.php
@@ -48,7 +48,7 @@ protected function populateResult(Response $response): void
     {
         $data = $response->toArray();
 
-        $this->tags = $this->populateResultTagList($data['Tags']);
+        $this->tags = $this->populateResultTagList($data['Tags'] ?? []);
         $this->hasMoreTags = filter_var($data['HasMoreTags'], \FILTER_VALIDATE_BOOLEAN);
     }
 
diff --git a/src/Result/PutRecordsOutput.php b/src/Result/PutRecordsOutput.php
index 5aba1f6..5b3b085 100644
--- a/src/Result/PutRecordsOutput.php
+++ b/src/Result/PutRecordsOutput.php
@@ -70,7 +70,7 @@ protected function populateResult(Response $response): void
         $data = $response->toArray();
 
         $this->failedRecordCount = isset($data['FailedRecordCount']) ? (int) $data['FailedRecordCount'] : null;
-        $this->records = $this->populateResultPutRecordsResultEntryList($data['Records']);
+        $this->records = $this->populateResultPutRecordsResultEntryList($data['Records'] ?? []);
         $this->encryptionType = isset($data['EncryptionType']) ? (string) $data['EncryptionType'] : null;
     }