1 files changed, 2 insertions, 3 deletions
diff --git a/fxjs/cjs_document.h b/fxjs/cjs_document.h
index 262d472cca..2af617f8ad 100644
--- a/fxjs/cjs_document.h
+++ b/fxjs/cjs_document.h
@@ -11,14 +11,13 @@
 #include <memory>
 #include <vector>
 
+#include "core/fxcrt/observable.h"
 #include "fxjs/js_define.h"
 
-class CJS_Document;
 class CPDF_TextObject;
-
 struct CJS_DelayData;
 
-class CJS_Document : public CJS_Object {
+class CJS_Document : public CJS_Object, public Observable<CJS_Document> {
  public:
   static int GetObjDefnID();
   static void DefineJSObjects(CFXJS_Engine* pEngine);