diff --git a/VKAPI/Handlers/Wall.php b/VKAPI/Handlers/Wall.php
index cb8a1ca2..530c8aa4 100644
--- a/VKAPI/Handlers/Wall.php
+++ b/VKAPI/Handlers/Wall.php
@@ -110,7 +110,7 @@ final class Wall extends VKAPIRequestHandler
             ];
     }
 
-    function post(string $owner_id, string $message, int $from_group = 0, int $signed = 0): object
+    function post(string $owner_id, string $message = "", int $from_group = 0, int $signed = 0): object
     {
         $this->requireUser();
 
@@ -167,6 +167,9 @@ final class Wall extends VKAPIRequestHandler
             $this->fail(-156, "The media file is corrupted or too large ");
         }
 
+        if(empty($message) && !$photo && !$video)
+            $this->fail(100, "Required parameter 'message' missing.");
+
         try {
             $post = new Post;
             $post->setOwner($this->getUser()->getId());