diff --git a/minisql/src/schema.rs b/minisql/src/schema.rs
index c56b4da..e029606 100644
--- a/minisql/src/schema.rs
+++ b/minisql/src/schema.rs
@@ -12,8 +12,8 @@ use std::collections::HashMap;
 pub struct TableSchema {
     table_name: TableName, // used for descriptive errors
     primary_key: ColumnPosition,
-    pub column_name_position_mapping: BiMap<ColumnName, ColumnPosition>,
-    pub types: Vec<DbType>,
+    column_name_position_mapping: BiMap<ColumnName, ColumnPosition>,
+    types: Vec<DbType>,
 }
 
 pub type TableName = String;