diff --git a/fs/file.c b/fs/file.c
index b241ea7..3da91a1 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -795,7 +795,7 @@ unsigned long __fdget_pos(unsigned int fd)
 	unsigned long v = __fdget(fd);
 	struct file *file = (struct file *)(v & ~3);
 
-	if (file && !(file->f_mode & FMODE_STREAM)) {
+	if (file && (file->f_mode & FMODE_ATOMIC_POS)) {
 		if (file_count(file) > 1) {
 			v |= FDPUT_POS_UNLOCK;
 			mutex_lock(&file->f_pos_lock);