diff --git a/CHANGES.txt b/CHANGES.txt
index cc7cdb217..7ab2506a8 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -9,6 +9,7 @@ Bugfixes
 
 * Restore `annotation_helper.tmpl` with dummy content - fix themes still mentioning it
   (Issue #3764, #3773)
+* Fix compatibility with watchdog 4 (Issue #3766)
 
 New in v8.3.1
 =============
diff --git a/nikola/plugins/command/auto/__init__.py b/nikola/plugins/command/auto/__init__.py
index f05dbcf19..b490e15d4 100644
--- a/nikola/plugins/command/auto/__init__.py
+++ b/nikola/plugins/command/auto/__init__.py
@@ -429,7 +429,7 @@ async def reload_page(self, event) -> None:
         # Move events have a dest_path, some editors like gedit use a
         # move on larger save operations for write protection
         if event:
-            event_path = event.dest_path if hasattr(event, 'dest_path') else event.src_path
+            event_path = event.dest_path if (hasattr(event, 'dest_path') and event.dest_path) else event.src_path
         else:
             event_path = self.site.config['OUTPUT_FOLDER']
         p = os.path.relpath(event_path, os.path.abspath(self.site.config['OUTPUT_FOLDER'])).replace(os.sep, '/')