diff --git a/src/main/java/com/songoda/ultimatekits/gui/GUIKitSelector.java b/src/main/java/com/songoda/ultimatekits/gui/GUIKitSelector.java
index 783a977..a1cc2e1 100644
--- a/src/main/java/com/songoda/ultimatekits/gui/GUIKitSelector.java
+++ b/src/main/java/com/songoda/ultimatekits/gui/GUIKitSelector.java
@@ -131,8 +131,8 @@ public class GUIKitSelector extends AbstractGUI {
             tmax = tmax - 10;
         for (int index = num; index != tmax; index++) {
             if (!glassless) {
-                if (num == 17 || num == (max - 18)) num++;
-                if (num == 18 && max == 36) num++;
+                if (index == 17 || index == (max - 18)) index++;
+                if (index == 18 && max == 36) index++;
             }
             if (id > kitList.size() - 1) {
                 inventory.setItem(index, new ItemStack(Material.AIR));