diff --git a/mod/lesson/db/install.xml b/mod/lesson/db/install.xml
index 73723db1539..9834d326432 100644
--- a/mod/lesson/db/install.xml
+++ b/mod/lesson/db/install.xml
@@ -15,7 +15,7 @@
         <FIELD NAME="password" TYPE="char" LENGTH="32" NOTNULL="true" SEQUENCE="false"/>
         <FIELD NAME="dependency" TYPE="int" LENGTH="10" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
         <FIELD NAME="conditions" TYPE="text" NOTNULL="true" SEQUENCE="false"/>
-        <FIELD NAME="grade" TYPE="int" LENGTH="3" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
+        <FIELD NAME="grade" TYPE="int" LENGTH="10" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
         <FIELD NAME="custom" TYPE="int" LENGTH="3" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
         <FIELD NAME="ongoing" TYPE="int" LENGTH="3" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
         <FIELD NAME="usemaxgrade" TYPE="int" LENGTH="3" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
@@ -188,4 +188,4 @@
       </INDEXES>
     </TABLE>
   </TABLES>
-</XMLDB>
\ No newline at end of file
+</XMLDB>
diff --git a/mod/lesson/db/upgrade.php b/mod/lesson/db/upgrade.php
index a52295d1153..91280c92f37 100644
--- a/mod/lesson/db/upgrade.php
+++ b/mod/lesson/db/upgrade.php
@@ -78,6 +78,22 @@ function xmldb_lesson_upgrade($oldversion) {
     // Moodle v2.7.0 release upgrade line.
     // Put any upgrade step following this.
 
+    // Moodle v2.8.0 release upgrade line.
+    // Put any upgrade step following this.
+
+    if ($oldversion < 2014051201) {
+
+        // Changing precision of field grade on table lesson to (10).
+        $table = new xmldb_table('lesson');
+        $field = new xmldb_field('grade', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'conditions');
+
+        // Launch change of precision for field grade.
+        $dbman->change_field_precision($table, $field);
+
+        // Lesson savepoint reached.
+        upgrade_mod_savepoint(true, 2014051201, 'lesson');
+    }
+
     return true;
 }
 
diff --git a/mod/lesson/version.php b/mod/lesson/version.php
index f2ae75b9109..7fcc6aa9e1f 100644
--- a/mod/lesson/version.php
+++ b/mod/lesson/version.php
@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2014051200;       // The current module version (Date: YYYYMMDDXX)
+$plugin->version   = 2014051201;       // The current module version (Date: YYYYMMDDXX)
 $plugin->requires  = 2014050800;    // Requires this Moodle version
 $plugin->component = 'mod_lesson'; // Full name of the plugin (used for diagnostics)
 $plugin->cron      = 0;