diff --git a/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/ErrorMessageSender.java b/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/ErrorMessageSender.java
index 08c8274..bcae7fe 100644
--- a/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/ErrorMessageSender.java
+++ b/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/ErrorMessageSender.java
@@ -52,10 +52,10 @@ public class ErrorMessageSender implements Listener {
 
         switch (event.getTransactionOutcome()) {
             case SHOP_DOES_NOT_BUY_THIS_ITEM:
-                message = Messages.NO_BUYING_HERE;
+                message = Messages.NO_SELLING_HERE;
                 break;
             case SHOP_DOES_NOT_SELL_THIS_ITEM:
-                message = Messages.NO_SELLING_HERE;
+                message = Messages.NO_BUYING_HERE;
                 break;
             case CLIENT_DOES_NOT_HAVE_PERMISSION:
                 message = Messages.NO_PERMISSION;
diff --git a/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/PriceValidator.java b/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/PriceValidator.java
index f89dd48..0e294d4 100644
--- a/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/PriceValidator.java
+++ b/src/main/java/com/Acrobot/ChestShop/Listeners/PreTransaction/PriceValidator.java
@@ -28,9 +28,9 @@ public class PriceValidator implements Listener {
 
         if (price.equals(NO_PRICE)) {
             if (transactionType == BUY) {
-                event.setCancelled(SHOP_DOES_NOT_BUY_THIS_ITEM);
-            } else {
                 event.setCancelled(SHOP_DOES_NOT_SELL_THIS_ITEM);
+            } else {
+                event.setCancelled(SHOP_DOES_NOT_BUY_THIS_ITEM);
             }
         }
     }