diff --git a/.travis.yml b/.travis.yml
index 9f1b70c..9ac2387 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-sudo: false
+os: linux
 dist: trusty
 
 language: php
diff --git a/src/Find_Command.php b/src/Find_Command.php
index b8953d9..a5f5e14 100644
--- a/src/Find_Command.php
+++ b/src/Find_Command.php
@@ -234,7 +234,7 @@ private function recurse_directory( $path ) {
 		// Don't recurse directories that probably don't have a WordPress installation.
 		if ( ! $this->skip_ignored_paths ) {
 			// Assume base path doesn't need comparison
-			$compared_path = preg_replace( '#^' . preg_quote( $this->base_path, '/' ) . '#', '', $path );
+			$compared_path = preg_replace( '#^' . preg_quote( $this->base_path, '#' ) . '#', '', $path );
 			// Ignore all hidden system directories
 			$bits        = explode( '/', trim( $compared_path, '/' ) );
 			$current_dir = array_pop( $bits );