diff --git a/lib/datadog/appsec/actions_handler/serializable_backtrace.rb b/lib/datadog/appsec/actions_handler/serializable_backtrace.rb
index 7fbfcf88be5..c0944959632 100644
--- a/lib/datadog/appsec/actions_handler/serializable_backtrace.rb
+++ b/lib/datadog/appsec/actions_handler/serializable_backtrace.rb
@@ -11,7 +11,7 @@ module ActionsHandler
       #
       # It represents the stack trace that is added to span metastruct field.
       class SerializableBacktrace
-        CLASS_AND_FUNCTION_NAME_REGEX = /\b([\w+:{2}]*\w+)?[#|.]?\b(\w+)\z/.freeze
+        CLASS_AND_FUNCTION_NAME_REGEX = /\b((?:\w+::)*\w+)?[#.]?\b(\w+)\z/.freeze
 
         def initialize(locations:, stack_id:)
           @stack_id = stack_id