diff --git a/core/dbobjectsearch.class.php b/core/dbobjectsearch.class.php
index 27e5f6436..50f674758 100644
--- a/core/dbobjectsearch.class.php
+++ b/core/dbobjectsearch.class.php
@@ -480,6 +480,11 @@ class DBObjectSearch extends DBSearch
 				$oNewCondition = Expression::FromOQL($sOQLCondition);
 				break;
 
+			case 'MATCHES':
+				$oRightExpr = new ScalarExpression($value);
+				$oNewCondition = new MatchExpression($oField, $oRightExpr);
+				break;
+
 			case 'Contains':
 			case 'Begins with':
 			case 'Finishes with':
diff --git a/test/core/DBSearchCommitTest.php b/test/core/DBSearchCommitTest.php
new file mode 100644
index 000000000..267b723a6
--- /dev/null
+++ b/test/core/DBSearchCommitTest.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Eric
+ * Date: 17/09/2018
+ * Time: 12:31
+ */
+
+namespace Combodo\iTop\Test\UnitTest\Core;
+
+use Combodo\iTop\Test\UnitTest\ItopDataTestCase;
+use DBSearch;
+
+/**
+ * Tests of the DBSearch class.
+ * <ul>
+ * <li>MakeGroupByQuery</li>
+ * </ul>
+ *
+ * @runTestsInSeparateProcesses
+ * @preserveGlobalState disabled
+ * @backupGlobals disabled
+ */
+class DBSearchCommitTest extends ItopDataTestCase
+{
+	// Need database COMMIT in order to create the FULLTEXT INDEX of MySQL
+	const USE_TRANSACTION = false;
+
+	/**
+	 * @throws \CoreException
+	 * @throws \CoreUnexpectedValue
+	 * @throws \MissingQueryArgument
+	 * @throws \MySQLException
+	 * @throws \MySQLHasGoneAwayException
+	 * @throws \OQLException
+	 * @throws \Exception
+	 */
+	public function testAttributeTagSet()
+	{
+		// Create a tag
+		$this->CreateTagData(TAG_CLASS, TAG_ATTCODE, 'tag1', 'UNIT First');
+		$this->CreateTagData(TAG_CLASS, TAG_ATTCODE, 'tag2', 'UNIT Second');
+		//Use it
+		$oTicket = $this->CreateTicket(1);
+		$oTicket->Set(TAG_ATTCODE, 'tag1');
+		$oTicket->DBWrite();
+
+		$oSearch = DBSearch::FromOQL("SELECT UserRequest");
+		$oSearch->AddCondition(TAG_ATTCODE, 'tag1', 'MATCHES');
+		$oSet = new \DBObjectSet($oSearch);
+		static::assertEquals(1, $oSet->Count());
+
+
+		$oTicket->Set(TAG_ATTCODE, 'tag1 tag2');
+		$oTicket->DBWrite();
+
+		$oSet = new \DBObjectSet($oSearch);
+		static::assertEquals(1, $oSet->Count());
+	}
+
+	/**
+	 * @throws \CoreException
+	 * @throws \CoreUnexpectedValue
+	 * @throws \MissingQueryArgument
+	 * @throws \MySQLException
+	 * @throws \MySQLHasGoneAwayException
+	 * @throws \OQLException
+	 * @throws \Exception
+	 */
+	public function testAttributeTagSet2()
+	{
+		// Create a tag
+		$this->CreateTagData(TAG_CLASS, TAG_ATTCODE, 'tag1', 'UNIT First');
+		$this->CreateTagData(TAG_CLASS, TAG_ATTCODE, 'tag2', 'UNIT Second');
+		//Use it
+		$oTicket = $this->CreateTicket(1);
+		$oTicket->Set(TAG_ATTCODE, 'tag1');
+		$oTicket->DBWrite();
+
+		$oSearch = DBSearch::FromOQL("SELECT UserRequest");
+		$oSearch->AddCondition(TAG_ATTCODE, 'tag1');
+		$oSet = new \DBObjectSet($oSearch);
+		static::assertEquals(1, $oSet->Count());
+
+
+		$oTicket->Set(TAG_ATTCODE, 'tag1 tag2');
+		$oTicket->DBWrite();
+
+		$oSet = new \DBObjectSet($oSearch);
+		static::assertEquals(0, $oSet->Count());
+	}
+
+}