diff --git a/gui/backend/gui_plugin/core/dbms/DbMySQLSessionSetupTasks.py b/gui/backend/gui_plugin/core/dbms/DbMySQLSessionSetupTasks.py
index 81ab28be..2ae88c88 100644
--- a/gui/backend/gui_plugin/core/dbms/DbMySQLSessionSetupTasks.py
+++ b/gui/backend/gui_plugin/core/dbms/DbMySQLSessionSetupTasks.py
@@ -93,9 +93,9 @@ def on_connected(self):
             result = self.execute("""
                                   SELECT ROUTINE_NAME
                                   FROM information_schema.routines
-                                  WHERE ROUTINE_SCHEMA="sys"
-                                    AND ROUTINE_NAME="mle_explain_error"
-                                    AND ROUTINE_TYPE="PROCEDURE"
+                                  WHERE ROUTINE_SCHEMA='sys'
+                                    AND ROUTINE_NAME='mle_explain_error'
+                                    AND ROUTINE_TYPE='PROCEDURE'
                                   """).fetch_all()
             self.define_data(common.MySQLData.HAS_EXPLAIN_ERROR, len(result) > 0)
 
diff --git a/gui/backend/gui_plugin/core/dbms/DbSession.py b/gui/backend/gui_plugin/core/dbms/DbSession.py
index 376cec75..a972a41f 100644
--- a/gui/backend/gui_plugin/core/dbms/DbSession.py
+++ b/gui/backend/gui_plugin/core/dbms/DbSession.py
@@ -251,7 +251,7 @@ def terminate_thread(self):
         self._close_database(True)
         if self.thread_error is not None:
             logger.error(f"Thread {self._id} exiting with code {self.thread_error}")
-            self._message_callback("ERROR", self.thread_error)
+            self._message_callback("ERROR", self.thread_error, None)
         self._term_complete.set()
 
     def execute_thread(self, sql, params, options=None):