diff --git a/src/lib/components/admin/Settings/Documents.svelte b/src/lib/components/admin/Settings/Documents.svelte
index 8425f338ea..2ae89640eb 100644
--- a/src/lib/components/admin/Settings/Documents.svelte
+++ b/src/lib/components/admin/Settings/Documents.svelte
@@ -281,7 +281,7 @@
 					? JSON.parse(RAGConfig.EXTERNAL_DOCUMENT_LOADER_HEADERS)
 					: {},
 			CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES:
-				RAGConfig.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES.trim() === ''
+				RAGConfig.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES === null
 					? undefined
 					: RAGConfig.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES.split(',')
 							.map((mimeType: string) => mimeType.trim())
@@ -342,9 +342,8 @@
 				: config.EXTERNAL_DOCUMENT_LOADER_HEADERS;
 
 		config.MINERU_FILE_EXTENSIONS = (config?.MINERU_FILE_EXTENSIONS ?? ['pdf']).join(', ');
-		config.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES = (
-			config?.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES ?? []
-		).join(', ');
+		config.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES =
+			config?.CONTENT_EXTRACTION_SUPPORTED_MEDIA_MIME_TYPES?.join(', ') ?? null;
 		config.RAG_TOKENIZER_MODEL = config?.RAG_TOKENIZER_MODEL ?? '';
 
 		RAGConfig = config;