diff --git a/src/wpephpcompat.php b/src/wpephpcompat.php
index 2f01622..fa50186 100644
--- a/src/wpephpcompat.php
+++ b/src/wpephpcompat.php
@@ -464,6 +464,10 @@ public function clean_after_scan() {
 	 * @return null
 	 */
 	private function add_directory( $name, $path ) {
+		if ( DIRECTORY_SEPARATOR == '\\' ) {
+			$path = str_replace( '\\', '/', $path );
+		}
+
 		$dir = array(
 			'post_title'   => $name,
 			'post_content' => $path,