diff --git a/src/com/pretzel/dev/villagertradelimiter/listeners/PlayerListener.java b/src/com/pretzel/dev/villagertradelimiter/listeners/PlayerListener.java
index 3c1df16..f775247 100644
--- a/src/com/pretzel/dev/villagertradelimiter/listeners/PlayerListener.java
+++ b/src/com/pretzel/dev/villagertradelimiter/listeners/PlayerListener.java
@@ -234,7 +234,7 @@ public class PlayerListener implements Listener {
      */
     private void setIngredient(final ConfigurationSection item, final IngredientWrapper ingredient) {
         if(item == null) return;
-        ingredient.setMaterialId("minecraft:"+item.getString("Material", ingredient.getMaterialId()).replace("minecraft:",""));
+        ingredient.setMaterialId("minecraft:"+item.getString("Material", ingredient.getMaterialId()).toLowerCase().replace("minecraft:",""));
         ingredient.setAmount(item.getInt("Amount", ingredient.getAmount()));
     }
 }
diff --git a/src/com/pretzel/dev/villagertradelimiter/settings/Settings.java b/src/com/pretzel/dev/villagertradelimiter/settings/Settings.java
index 3072205..c9b4e0b 100644
--- a/src/com/pretzel/dev/villagertradelimiter/settings/Settings.java
+++ b/src/com/pretzel/dev/villagertradelimiter/settings/Settings.java
@@ -168,6 +168,9 @@ public class Settings {
      * @return True if a recipe matches an override section, false otherwise
      */
     private boolean verify(final ItemStack buy, final ItemStack sell, final Material material) {
+        if(buy == null && sell == null) return false;
+        if(buy == null) return sell.getType() == material;
+        if(sell == null) return buy.getType() == material;
         return ((buy.getType() == material) || (sell.getType() == material));
     }
 }