diff --git a/SimpleX/regex_simplexlinks.py b/SimpleX/regex_simplexlinks.py
index 5bdf3a6..3d69628 100644
--- a/SimpleX/regex_simplexlinks.py
+++ b/SimpleX/regex_simplexlinks.py
@@ -20,17 +20,18 @@ hostname_pattern = re.compile(r'^(?:[a-zA-Z0-9.-]+|[0-9]{1,3}(?:\.[0-9]{1,3}){3}
 def IsSimpleXChatroomValid(url: str) -> bool:
     """Validate the SimpleX chatroom URL."""
     REQUIRED_SUBSTRING = "contact#/?v=2-7&smp=smp%3A%2F"
+    REQUIRED_SUBSTRING2 = "contact/#/?v=2-7&smp=smp%3A%2F"
     
     # Step 1: Check if it starts with http://, https://, or simplex:/
     if url.startswith(('http://', 'https://', 'simplex:/')):
         # Step 1.5: If http:// or https://, check for valid clearnet or onion domain
-        if url.startswith(('http://', 'https://')):
-            return IsUrlValid(url)
+        if url.startswith(('http://', 'https://')) and not IsUrlValid(url):
+            return False
     elif not url.startswith('simplex:/'):
         return False  # Must start with one of the valid protocols
 
     # Step 2: Check for the presence of the required substring
-    if REQUIRED_SUBSTRING not in url:
+    if REQUIRED_SUBSTRING not in url and REQUIRED_SUBSTRING2 not in url:
         return False  # Required substring not found
 
     # Step 3: Extract the part after "smp=smp%3A%2F"
diff --git a/SimpleX/utils.py b/SimpleX/utils.py
index 152571b..3164b8e 100644
--- a/SimpleX/utils.py
+++ b/SimpleX/utils.py
@@ -6,6 +6,7 @@ def IsOnionValid(url: str)-> bool:
     """
     try:
         pattern = re.compile(r"^[A-Za-z0-9:/._%-=#?&@]+(.onion)$")
+        url_pattern = re.compile(r"^(\w+:)?(?://)?(\w+\.)?[a-z2-7]{56}\.onion")
         url = url.strip().removesuffix('/')
         if url.startswith('http://'):
             domain = url.split('/')[2]
@@ -22,14 +23,14 @@ def IsOnionValid(url: str)-> bool:
                 return False
         else:
                         #TODO : edit the url to make sure it has http:// at the beginning, in case if it's missing? (problem is that it only returns true or false)
-            if pattern.fullmatch(url) is not None:
+            if url_pattern.match(url) is not None:
                 if len(url.split('.')) > 3:
                     return False
                 else:
                     if len(url) < 62:
                         return False
                     return True
-            elif pattern.fullmatch(url) is None:
+            elif url_pattern.match(url) is None:
                 return False
             else:
                 return False
@@ -41,10 +42,11 @@ def IsUrlValid(url:str)->bool:
         Check if url is valid both dark net end clearnet.
         """
         pattern = re.compile(r"^[A-Za-z0-9:/._%-=#?&@]+$")
+        onion_pattern = re.compile(r"^(\w+:)?(?://)?(\w+\.)?[a-z2-7]{56}\.onion")
         url = str(url)
         if len(url) < 4:
                 return False
-        if url.endswith('.onion'):
+        if onion_pattern.match(url) is not None:
                 return IsOnionValid(url)
         else:
                 if not url.__contains__('.'):