diff --git a/src/watchdog/utils/dirsnapshot.py b/src/watchdog/utils/dirsnapshot.py
index 20abe221d..8310405ec 100644
--- a/src/watchdog/utils/dirsnapshot.py
+++ b/src/watchdog/utils/dirsnapshot.py
@@ -229,7 +229,7 @@ def walk(root):
                 yield _
             if recursive:
                 for path, st in entries:
-                    if S_ISDIR(st.st_mode):
+                    if S_ISDIR(st.st_mode) and os.access(path, os.R_OK):
                         for _ in walk(path):
                             yield _