diff --git a/reflex_core/aws_rule_interface.py b/reflex_core/aws_rule_interface.py
index 07f21d5..37379d4 100644
--- a/reflex_core/aws_rule_interface.py
+++ b/reflex_core/aws_rule_interface.py
@@ -320,9 +320,7 @@ def get_remediation_message_subject(self):
             str: The subject to use in notifications.
         """
         subject = self.__class__.__name__
-        subject_split = re.split(
-            "(?=(?<=[a-z])[A-Z])|(?=[A-Z](?=[a-z])|(?=^[A-Z]))", subject
-        )
+        subject_split = re.findall(r"[A-Z](?:[a-z]+|[A-Z]*(?=[A-Z]|$))", subject)
         fixed_subject = " ".join(subject_split)
         return f"The Reflex Rule {fixed_subject} was triggered."