diff --git a/src/class_sqlThread.py b/src/class_sqlThread.py
index f0862591..9de44a42 100644
--- a/src/class_sqlThread.py
+++ b/src/class_sqlThread.py
@@ -25,6 +25,8 @@ class sqlThread(threading.Thread):
         self.conn = sqlite3.connect(shared.appdata + 'messages.dat')
         self.conn.text_factory = str
         self.cur = self.conn.cursor()
+        
+        self.cur.execute('PRAGMA secure_delete = true')
 
         try:
             self.cur.execute(