diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 00830c68f5..b442b0b151 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -3094,6 +3094,10 @@ function wp_targeted_link_rel_callback( $matches ) {
 		$delimiter = trim( $rel_match[1] ) ? $rel_match[1] : '"';
 		$rel       = 'rel=' . $delimiter . trim( implode( ' ', $parts ) ) . $delimiter;
 		$link_html = str_replace( $rel_match[0], $rel, $link_html );
+	} elseif ( preg_match( '|target\s*=\s*?\\\\"|', $link_html ) ) {
+		$link_html .= " rel=\\\"$rel\\\"";
+	} elseif ( preg_match( '#(target|href)\s*=\s*?\'#', $link_html ) ) {
+		$link_html .= " rel='$rel'";
 	} else {
 		$link_html .= " rel=\"$rel\"";
 	}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 295e6df7e3..ce10a990d0 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2.1-alpha-45347';
+$wp_version = '5.2.1-alpha-45349';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.