diff --git a/mysql.md b/mysql.md
index 445dd9376..e61c21972 100644
--- a/mysql.md
+++ b/mysql.md
@@ -204,7 +204,7 @@ Host ‘%’ indicates any host.
 ### Main Data Types
 
 ```sql
-TINYINT (1o: -217+128)
+TINYINT (1o: -128 to +127)
 SMALLINT (2o: +-65 000)
 MEDIUMINT (3o: +-16 000 000)
 INT (4o: +- 2 000 000 000)