diff --git a/wp-includes/SimplePie/Misc.php b/wp-includes/SimplePie/Misc.php
index 8af6b75ec4..138a6f933d 100755
--- a/wp-includes/SimplePie/Misc.php
+++ b/wp-includes/SimplePie/Misc.php
@@ -80,7 +80,9 @@ class SimplePie_Misc
 	public static function absolutize_url($relative, $base)
 	{
 		$iri = SimplePie_IRI::absolutize(new SimplePie_IRI($base), $relative);
-		return $iri->get_uri();
+		if ( $iri )
+			return $iri->get_uri();
+		return $relative;
 	}
 
 	/**