diff --git a/src/main/java/com/songoda/skyblock/command/commands/admin/StackableCommand.java b/src/main/java/com/songoda/skyblock/command/commands/admin/StackableCommand.java
index 4c1d270c..ff24df1b 100644
--- a/src/main/java/com/songoda/skyblock/command/commands/admin/StackableCommand.java
+++ b/src/main/java/com/songoda/skyblock/command/commands/admin/StackableCommand.java
@@ -68,13 +68,16 @@ public class StackableCommand extends SubCommand {
                 return;
             }
 
+            final int oldSize;
+
             if (stack == null) {
                 stack = new Stackable(loc, block.getType());
                 stackableManager.addStack(stack);
+                oldSize = 0;
+            } else {
+                oldSize = stack.getSize();
             }
 
-            final int oldSize = stack.getSize();
-
             stack.setSize(amount);
 
             String input = messageConfig.getString("Command.Island.Admin.Stackable.Setsize.Success");