diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 95dc0c6c38..eade81a8a9 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -2911,9 +2911,9 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 
 		$recipe = $this->server->getCraftingManager()->getRecipe($packet->id);
 
-		if($recipe === null or (($recipe instanceof BigShapelessRecipe or $recipe instanceof BigShapedRecipe) and $this->craftingType === 0)){
+		if($recipe === null or (($recipe instanceof BigShapelessRecipe or $recipe instanceof BigShapedRecipe) and $this->craftingType === 0) or count($packet->input) === 0){
 			$this->inventory->sendContents($this);
-			return true;
+			return false;
 		}
 
 		$canCraft = true;
diff --git a/tests/plugins/PocketMine-DevTools b/tests/plugins/PocketMine-DevTools
index b296436579..4ade26741e 160000
--- a/tests/plugins/PocketMine-DevTools
+++ b/tests/plugins/PocketMine-DevTools
@@ -1 +1 @@
-Subproject commit b296436579580cc48fc1bdb1b0af4363305991fb
+Subproject commit 4ade26741e8050de196e4c12af01b8b42e76e6e7
diff --git a/tests/plugins/PocketMine-TesterPlugin b/tests/plugins/PocketMine-TesterPlugin
index 26a03d6d46..e963064839 160000
--- a/tests/plugins/PocketMine-TesterPlugin
+++ b/tests/plugins/PocketMine-TesterPlugin
@@ -1 +1 @@
-Subproject commit 26a03d6d467f7e505a292610078b65c0205e4ed8
+Subproject commit e963064839334ce95e297df69bfe8af5fa95ab3a