diff --git a/vlib/mysql/mysql.v b/vlib/mysql/mysql.v
index c5ef84ecb2..f915ee09cd 100644
--- a/vlib/mysql/mysql.v
+++ b/vlib/mysql/mysql.v
@@ -6,6 +6,7 @@ module mysql
 //     v -cflags '-I/usr/include/mysql' program.v
 
 #flag -lmysqlclient
+#flag linux -I/usr/include/mysql
 #include <mysql.h>
 
 pub struct DB {