diff --git a/includes/cache/LinkBatch.php b/includes/cache/LinkBatch.php
index 5dc81101b03..a60195891fc 100644
--- a/includes/cache/LinkBatch.php
+++ b/includes/cache/LinkBatch.php
@@ -58,12 +58,8 @@ class LinkBatch {
 	/**
 	 * @param LinkTarget $linkTarget
 	 */
-	public function addObj( $linkTarget ) {
-		if ( is_object( $linkTarget ) ) {
-			$this->add( $linkTarget->getNamespace(), $linkTarget->getDBkey() );
-		} else {
-			wfDebug( "Warning: LinkBatch::addObj got invalid LinkTarget object\n" );
-		}
+	public function addObj( LinkTarget $linkTarget ) {
+		$this->add( $linkTarget->getNamespace(), $linkTarget->getDBkey() );
 	}
 
 	/**