diff --git a/ttynvt.c b/ttynvt.c
index 260cb53..025158f 100644
--- a/ttynvt.c
+++ b/ttynvt.c
@@ -407,10 +407,17 @@ ttynvt_read(fuse_req_t req, size_t size, off_t off,
     }
     if (size > tty->rxcnt)
         size = tty->rxcnt;
-    fuse_reply_buf(req, tty->buf, size);
-    memmove(tty->buf, tty->buf + size, tty->blen - size);
-    tty->blen -= size;
-    tty->rxcnt -= size;
+    if (size > 0)
+    {
+        fuse_reply_buf(req, tty->buf, size);
+        memmove(tty->buf, tty->buf + size, tty->blen - size);
+        tty->blen -= size;
+        tty->rxcnt -= size;
+    }
+    else
+    {
+        fuse_reply_err(req, EINTR);
+    }
     pthread_mutex_unlock(&tty->tty_lock);
 }