diff --git a/schema/ttrss_schema_mysql.sql b/schema/ttrss_schema_mysql.sql
index 181c49f4..e27aee58 100644
--- a/schema/ttrss_schema_mysql.sql
+++ b/schema/ttrss_schema_mysql.sql
@@ -219,7 +219,7 @@ create table ttrss_prefs (pref_name varchar(250) not null primary key,
 	type_id integer not null,
 	section_id integer not null default 1,
 	short_desc text not null,
-	help_text varchar(300) not null default '',
+	help_text text not null default '',
 	def_value text not null,
 	index(type_id),
 	foreign key (type_id) references ttrss_prefs_types(id),