diff --git a/Database/database.cpp b/Database/database.cpp
index 74d97c8..a9032cc 100644
--- a/Database/database.cpp
+++ b/Database/database.cpp
@@ -133,6 +133,7 @@ bool deleteObject(const string &query) { return executeQuery(query); }
 void closeDatabase() {
   if (db) {
     sqlite3_close(db);
+    db = nullptr;  // Prevent dangling pointer
   }
 }