diff --git a/createDatabase.sql b/createDatabase.sql
index b126af9..798fcac 100755
--- a/createDatabase.sql
+++ b/createDatabase.sql
@@ -16,7 +16,7 @@ CREATE TABLE IF NOT EXISTS receiveds
 (
 	id INT NOT NULL AUTO_INCREMENT,
 	at DATETIME NOT NULL,
-	send_by VARCHAR(12) NOT NULL,
+	send_by VARCHAR(20) NOT NULL,
 	content VARCHAR(1000) NOT NULL,
 	is_command BOOLEAN NOT NULL,
 	PRIMARY KEY (id)
@@ -26,7 +26,7 @@ CREATE TABLE IF NOT EXISTS sendeds
 (
 	id INT NOT NULL AUTO_INCREMENT,
 	at DATETIME NOT NULL,
-	target VARCHAR(12) NOT NULL,
+	target VARCHAR(20) NOT NULL,
 	content VARCHAR(1000) NOT NULL,
 	before_delivered INT NOT NULL,
 	delivered BOOLEAN NOT NULL DEFAULT FALSE,
@@ -49,7 +49,7 @@ CREATE TABLE IF NOT EXISTS contacts
 	
 	id INT NOT NULL AUTO_INCREMENT,
 	name VARCHAR(100) NOT NULL,
-	number VARCHAR(12) NOT NULL,
+	number VARCHAR(20) NOT NULL,
 	PRIMARY KEY (id),
 	UNIQUE (name)
 );
@@ -96,7 +96,7 @@ CREATE TABLE IF NOT EXISTS scheduleds_numbers
 (
 	id INT NOT NULL AUTO_INCREMENT,
 	id_scheduled INT NOT NULL,
-	number VARCHAR(12) NOT NULL,
+	number VARCHAR(20) NOT NULL,
 	PRIMARY KEY (id),
 	FOREIGN KEY (id_scheduled) REFERENCES scheduleds (id) ON DELETE CASCADE ON UPDATE CASCADE
 );
@@ -143,7 +143,7 @@ CREATE TABLE IF NOT EXISTS transfers
 CREATE TABLE IF NOT EXISTS sms_stop
 (
 	id INT NOT NULL AUTO_INCREMENT,
-	number VARCHAR(12) NOT NULL,
+	number VARCHAR(20) NOT NULL,
 	PRIMARY KEY (id),
 	UNIQUE (number)
 );