diff --git a/cocluto/SimpaDbUtil.py b/cocluto/SimpaDbUtil.py
index 61fb4f7..d5f11c5 100644
--- a/cocluto/SimpaDbUtil.py
+++ b/cocluto/SimpaDbUtil.py
@@ -95,8 +95,8 @@ class SqlFile(ISqlDatabaseBackend):
         # If set False, the returned connection may be shared across multiple threads. When using multiple threads with the same connection writing operations should be serialized by the user to avoid data corruption
         # I hope it's safe here but I'm not 100% sure though. Anyway, if the database gets corrupt, it not a big deal since this memory resident database gets reconstructed from the sql file...
         self._con = sqlite3.connect(sqlite_db_path, check_same_thread=check_same_thread)
-        f = open(self._sql_file_path, 'r')
-        sql = f.read()  # watch out for built-in `str`
+        with open(self._sql_file_path, 'r') as f:
+            sql = f.read()  # watch out for built-in `str`
         # print(sql)
         self._cur = self._con.cursor()
         # print(mysql_to_sqlite(sql))