diff --git a/packages/tailwindcss-language-server/src/server.ts b/packages/tailwindcss-language-server/src/server.ts
index 0b9b4f576833ca4784c611e280d7422d6253f4e8..bef3178e973d9d15a298b82c66b9fbc2dab54913 100644
--- a/packages/tailwindcss-language-server/src/server.ts
+++ b/packages/tailwindcss-language-server/src/server.ts
@@ -1562,7 +1562,7 @@   private documentService: DocumentService
   public initializeParams: InitializeParams
   private registrations: Promise<BulkUnregistration>
   private disposables: Disposable[] = []
-  private watchPatterns: (patterns: string[]) => void
+  private watchPatterns: (patterns: string[]) => void = () => {}
   private watched: string[] = []
 
   constructor(private connection: Connection) {