diff --git a/core/app.cpp b/core/app.cpp
index 01b7ae7..4cd9b29 100755
--- a/core/app.cpp
+++ b/core/app.cpp
@@ -925,7 +925,7 @@ void App::FilterCompressSend(bool compressing, int compress_encoding, const std:
 	bool raw = cur.request->is_item && cur.request->item.content_type == Item::ct_raw && cur.request->status == WINIX_ERR_OK &&
 			   cur.request->function && (cur.request->function == &functions.fun_cat || cur.request->function == &functions.fun_run);
 
-	if( config.html_filter && cur.request->use_html_filter && !raw )
+	if( config.html_filter && cur.request->use_html_filter && !raw && !cur.request->ajax_serializer )
 	{
 		TemplatesFunctions::html_filter.Filter(*source, clean_html);
 		AddDebugInfo(clean_html);
diff --git a/core/pluginmsg.h b/core/pluginmsg.h
index ec4e9cb..1ea6214 100755
--- a/core/pluginmsg.h
+++ b/core/pluginmsg.h
@@ -249,6 +249,8 @@
 // this is sent from the other thread (without locking)
 // in p1 you have a pointer to PT::Space
 // session is null
+// if you process the job then return 'true' from the processing method (from plugin call)
+// so this prevent to make a standard (system) job
 #define WINIX_JOB							31200