diff --git a/ext.py b/ext.py
index cdf335f..ba62ac6 100644
--- a/ext.py
+++ b/ext.py
@@ -119,7 +119,7 @@ class Order:
 		self.pending_room = self.ans('pending_room')
 		self.pending_roommates = self.ans('pending_roommates').split(',') if self.ans('pending_roommates') else []
 		self.room_members = self.ans('room_members').split(',') if self.ans('room_members') else []
-		self.room_owner = (self.code == self.room_id)
+		self.room_owner = (self.code is not None and self.room_id is not None and self.code.strip() == self.room_id.strip())
 		self.room_secret = self.ans('room_secret')
 		self.app_token = self.ans('app_token')
 		self.nfc_id = self.ans('nfc_id')
diff --git a/res/scripts/roomManager.js b/res/scripts/roomManager.js
index 0995ae9..29537bf 100644
--- a/res/scripts/roomManager.js
+++ b/res/scripts/roomManager.js
@@ -7,7 +7,8 @@ function confirmAction (intent, sender) {
     let intentFormAction =  document.querySelector("#intentFormAction")
     let intentSend =  document.querySelector("#intentSend")
     // Resetting ui
-    intentEdit.setAttribute('required', false)
+    intentEdit.removeAttribute('required')
+    intentEdit.removeAttribute('minlength')
     intentFormAction.setAttribute('method', 'GET')
     intentEditPanel.style.display = 'none';
 
@@ -17,6 +18,7 @@ function confirmAction (intent, sender) {
         case 'rename':
             intentEditPanel.style.display = 'block';
             intentEdit.setAttribute('required', true)
+            intentEdit.setAttribute('minlength', 4)
             intentFormAction.setAttribute('method', 'POST')
             document.getElementById("intentRename").value = sender.parentElement.parentElement.querySelector("span").innerText;
             break
diff --git a/room.py b/room.py
index 4f0f118..0f23116 100644
--- a/room.py
+++ b/room.py
@@ -49,7 +49,7 @@ async def delete_room(request, order: Order):
 	if not order:
 		raise exceptions.Forbidden("You have been logged out. Please access the link in your E-Mail to login again!")
 
-	if order.room_owner:
+	if not order.room_owner:
 		raise exceptions.BadRequest("You are not allowed to delete room of others.")
 		
 	if order.ans('room_confirmed'):
diff --git a/tpl/nosecount.html b/tpl/nosecount.html
index ff91a1b..019ccfb 100644
--- a/tpl/nosecount.html
+++ b/tpl/nosecount.html
@@ -114,7 +114,7 @@
 					<p id="intentDescription"></p>
 					<div id="intentEditPanel">
 						<label for="name">Enter a new room name</label>
-						<input id="intentRename" name="name" type="text" value="" minlength="4" maxlength="64"/>
+						<input id="intentRename" name="name" type="text" value="" maxlength="64"/>
 					</div>
 					<footer>
 						<input id="intentSend" type="submit" value="Confirm" />