diff --git a/src/Assets/Config.php b/src/Assets/Config.php
index e946e9e..39291df 100644
--- a/src/Assets/Config.php
+++ b/src/Assets/Config.php
@@ -135,6 +135,8 @@ public static function set_path( string $path ) {
 
 		if ( DIRECTORY_SEPARATOR !== '/' ) {
 			$plugin_dir = str_replace( DIRECTORY_SEPARATOR, '/', $plugin_dir );
+			// Because the $path passed can be a constant like plugin_dir_path( __FILE__ ), we should check and replace the slash in the $path too.
+			$path       = str_replace( DIRECTORY_SEPARATOR, '/', $path );
 		}
 
 		$plugins_content_dir_position = strpos( $path, $plugin_dir );