diff --git a/forum.nim b/forum.nim
index a15b6e8..8881498 100644
--- a/forum.nim
+++ b/forum.nim
@@ -1120,6 +1120,9 @@ proc executeNewThread(c: TForumData, subject, msg: string): (int64, int64) =
   if subject.len > 100:
     raise newForumError("Subject is too long", @["subject"])
 
+  if msg.len == 0:
+    raise newForumError("Message is empty", @["msg"])
+
   if not validateRst(c, msg):
     raise newForumError("Message needs to be valid RST", @["msg"])
 
diff --git a/redesign/newthread.nim b/redesign/newthread.nim
index c81f3cf..8ce4623 100644
--- a/redesign/newthread.nim
+++ b/redesign/newthread.nim
@@ -52,8 +52,12 @@ when defined(js):
             input(class="form-input", `type`="text", name="username",
                   placeholder="Type the title here",
                   onChange=(e: Event, n: VNode) => onSubjectChange(e, n, state))
+            if state.error.isSome():
+              p(class="text-error"):
+                text state.error.get().message
             renderContent(state.replyBox, none[Thread](), none[Post]())
           tdiv(class="footer"):
+
             button(class=class(
                     {"loading": state.loading},
                     "btn btn-primary"