diff --git a/agent/site.py b/agent/site.py
index 1790f560..579e0e60 100644
--- a/agent/site.py
+++ b/agent/site.py
@@ -924,7 +924,7 @@ def get_database_size(self):
             # only specific to mysql/mariaDB. use a different query for postgres.
             # or try using frappe.db.get_database_size if possible
             query = (
-                "SELECT SUM(`data_length` + `index_length` + `data_free`)"
+                "SELECT SUM(`data_length` + `index_length`)"
                 " FROM information_schema.tables"
                 f' WHERE `table_schema` = "{self.database}"'
                 " GROUP BY `table_schema`"