diff --git a/tests/UnifiedSpecTests/Operation.php b/tests/UnifiedSpecTests/Operation.php
index ca13f32e5..54f634b02 100644
--- a/tests/UnifiedSpecTests/Operation.php
+++ b/tests/UnifiedSpecTests/Operation.php
@@ -507,16 +507,12 @@ static function ($request) {
                 );
 
             case 'insertMany':
-                // Merge nested and top-level options (see: SPEC-1158)
-                $options = isset($args['options']) ? (array) $args['options'] : [];
-                $options += array_diff_key($args, ['documents' => 1]);
-
                 assertArrayHasKey('documents', $args);
                 assertIsArray($args['documents']);
 
                 return $collection->insertMany(
                     $args['documents'],
-                    $options
+                    array_diff_key($args, ['documents' => 1])
                 );
 
             case 'insertOne':
diff --git a/tests/UnifiedSpecTests/Util.php b/tests/UnifiedSpecTests/Util.php
index 1572e16d4..1c0c249e7 100644
--- a/tests/UnifiedSpecTests/Util.php
+++ b/tests/UnifiedSpecTests/Util.php
@@ -104,7 +104,7 @@ final class Util
             'findOneAndUpdate' => ['let', 'returnDocument', 'filter', 'update', 'session', 'upsert', 'projection', 'remove', 'arrayFilters', 'bypassDocumentValidation', 'collation', 'hint', 'maxTimeMS', 'sort', 'comment'],
             'updateMany' => ['let', 'filter', 'update', 'session', 'upsert', 'arrayFilters', 'bypassDocumentValidation', 'collation', 'hint', 'comment'],
             'updateOne' => ['let', 'filter', 'update', 'session', 'upsert', 'arrayFilters', 'bypassDocumentValidation', 'collation', 'hint', 'comment'],
-            'insertMany' => ['options', 'documents', 'session', 'ordered', 'bypassDocumentValidation', 'comment'],
+            'insertMany' => ['documents', 'session', 'ordered', 'bypassDocumentValidation', 'comment'],
             'insertOne' => ['document', 'session', 'bypassDocumentValidation', 'comment'],
             'listIndexes' => ['session', 'maxTimeMS', 'comment'],
             'mapReduce' => ['map', 'reduce', 'out', 'session', 'bypassDocumentValidation', 'collation', 'finalize', 'jsMode', 'limit', 'maxTimeMS', 'query', 'scope', 'sort', 'verbose', 'comment'],