diff --git a/api/chalicelib/utils/helper.py b/api/chalicelib/utils/helper.py
index ba89a8529..2633cf690 100644
--- a/api/chalicelib/utils/helper.py
+++ b/api/chalicelib/utils/helper.py
@@ -176,6 +176,11 @@ def is_alphabet_space_dash(word):
     return r.match(word) is not None
 
 
+def remove_non_alphabet_space_dash(word):
+    r = re.compile("[^a-zA-Z -]")
+    return r.sub('', word)
+
+
 def merge_lists_by_key(l1, l2, key):
     merged = {}
     for item in l1 + l2:
diff --git a/ee/api/chalicelib/core/signup.py b/ee/api/chalicelib/core/signup.py
index ab0c03eb3..8c44061de 100644
--- a/ee/api/chalicelib/core/signup.py
+++ b/ee/api/chalicelib/core/signup.py
@@ -140,7 +140,10 @@ async def create_oauth_tenant(fullname: str, email: str):
             errors.append("Email address previously deleted.")
 
     if fullname is None or len(fullname) < 1 or not helper.is_alphabet_space_dash(fullname):
-        errors.append("Invalid full name.")
+        edited_fullname = helper.remove_non_alphabet_space_dash(fullname)
+        if len(edited_fullname) < 1:
+            errors.append("Invalid full name.")
+        fullname = edited_fullname
 
     if len(errors) > 0:
         logger.warning(