diff --git a/membershipworks/tasks/ucsAccounts.py b/membershipworks/tasks/ucsAccounts.py
index d3e90ec..14e642b 100644
--- a/membershipworks/tasks/ucsAccounts.py
+++ b/membershipworks/tasks/ucsAccounts.py
@@ -22,7 +22,7 @@ GROUPS_REGEX = "|".join(
 #   A group name must start and end with a letter, number or underscore.
 #   In between additionally spaces, dashes and dots are allowed.
 def sanitize_group_name(name):
-    sanitized_body = re.sub(r"[^0-9A-Za-z_ -.]", ".", name)
+    sanitized_body = re.sub(r"[^0-9A-Za-z_ -.]+", ".", name)
     sanitized_start_end = re.sub("^[^0-9A-Za-z_]|[^0-9A-Za-z_]$", "_", sanitized_body)
 
     return "MW_" + sanitized_start_end
@@ -30,7 +30,7 @@ def sanitize_group_name(name):
 
 # From an API error message: "Username must only contain numbers, letters and dots!"
 def sanitize_user_name(name):
-    return re.sub(r"[^0-9a-z.]", ".", name.lower()).strip(".")
+    return re.sub(r"[^0-9a-z.]+", ".", name.lower()).strip(".")
 
 
 async def make_groups(udm):