diff --git a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-systems-and-mount-control/inotify_add_watch.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-systems-and-mount-control/inotify_add_watch.scml
index de4e381e4..ebad68a25 100644
--- a/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-systems-and-mount-control/inotify_add_watch.scml
+++ b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-systems-and-mount-control/inotify_add_watch.scml
@@ -3,7 +3,7 @@ inotify_events = IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE |
                  IN_DELETE_SELF | IN_CLOSE;
 
 inotify_controls = IN_ONLYDIR | IN_DONT_FOLLOW | IN_MASK_CREATE |
-                   IN_MASK_ADD | IN_ISDIR | IN_ONESHOT;
+                   IN_MASK_ADD | IN_ONESHOT;
 
 // Add a watch to an initialized inotify instance
 inotify_add_watch(fd, pathname, mask = <inotify_events> | <inotify_controls>);
diff --git a/kernel/src/fs/notify/inotify.rs b/kernel/src/fs/notify/inotify.rs
index 3fabc0304..8729306df 100644
--- a/kernel/src/fs/notify/inotify.rs
+++ b/kernel/src/fs/notify/inotify.rs
@@ -239,8 +239,12 @@ impl InotifyFile {
             }
 
             // If the queue is full, drop the event.
-            // We do not return an error to the caller.
-            if event_queue.len() >= self.queue_capacity {
+            // Try to queue an overflow event in advance to alert the user.
+            if event_queue.len() == self.queue_capacity - 1 {
+                let overflow_event = InotifyEvent::new(u32::MAX, FsEvents::Q_OVERFLOW, 0, None);
+                event_queue.push_back(overflow_event);
+                return;
+            } else if event_queue.len() >= self.queue_capacity {
                 return;
             }
 
@@ -672,7 +676,6 @@ bitflags! {
         const EXCL_UNLINK   = 1 << 26; // Exclude events on unlinked objects
         const MASK_CREATE   = 1 << 28; // Only create watches
         const MASK_ADD      = 1 << 29; // Add to existing watch mask
-        const ISDIR         = 1 << 30; // Event occurred on a directory
         const ONESHOT       = 1 << 31; // Send event once
     }
 }