diff --git a/pyulog/core.py b/pyulog/core.py
index 833af71..0b86630 100644
--- a/pyulog/core.py
+++ b/pyulog/core.py
@@ -799,8 +799,8 @@ def initialize(self, data, header, subscriptions, ulog_object) -> bool:
                             print(ulog_object._file_handle.tell())
                         print('Warning: no subscription found for message id {:}. Continuing,'
                               ' but file is most likely corrupt'.format(msg_id))
+                    has_corruption = True
                 self.timestamp = 0
-                has_corruption = True
             return has_corruption
 
     def _add_parameter_default(self, msg_param):