diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23bc0b024..c1a7bb4f1 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Fixed Portable Grids not keeping their enchantments when placed (Darkere)
 - Shortened crafting text for the Russion translation to fix Grid overlays (yaroslav4167)
 - Fixed JEI hotkeys not working on fluid filter slots (raoulvdberge)
+- Fixed crash when opening Crafter Manager with FTB Quests installed (raoulvdberge)
 
 ### 1.6.14
 - Fixed server crash (raoulvdberge)
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/container/ContainerCrafterManager.java b/src/main/java/com/raoulvdberge/refinedstorage/container/ContainerCrafterManager.java
index 5b6277bea..c42ef0596 100644
--- a/src/main/java/com/raoulvdberge/refinedstorage/container/ContainerCrafterManager.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/container/ContainerCrafterManager.java
@@ -31,15 +31,15 @@ import java.util.function.Predicate;
 
 public class ContainerCrafterManager extends ContainerBase {
     public class CrafterManagerListener implements IContainerListener {
-        private IContainerListener base;
+        private EntityPlayerMP base;
         private boolean receivedContainerData;
 
-        public CrafterManagerListener(IContainerListener base) {
+        public CrafterManagerListener(EntityPlayerMP base) {
             this.base = base;
         }
 
         public EntityPlayerMP getPlayer() {
-            return (EntityPlayerMP) base;
+            return base;
         }
 
         @Override
@@ -80,7 +80,11 @@ public class ContainerCrafterManager extends ContainerBase {
 
     @Override
     public void addListener(IContainerListener listener) {
-        super.addListener(new CrafterManagerListener(listener));
+        if (listener instanceof EntityPlayerMP) {
+            listener = new CrafterManagerListener((EntityPlayerMP) listener);
+        }
+
+        super.addListener(listener);
     }
 
     public List<IContainerListener> getListeners() {
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/network/MessageCrafterManagerRequestSlotData.java b/src/main/java/com/raoulvdberge/refinedstorage/network/MessageCrafterManagerRequestSlotData.java
index d55d2fc5c..f995c0728 100644
--- a/src/main/java/com/raoulvdberge/refinedstorage/network/MessageCrafterManagerRequestSlotData.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/network/MessageCrafterManagerRequestSlotData.java
@@ -19,11 +19,13 @@ public class MessageCrafterManagerRequestSlotData extends MessageHandlerPlayerTo
     protected void handle(MessageCrafterManagerRequestSlotData message, EntityPlayerMP player) {
         if (player.openContainer instanceof ContainerCrafterManager) {
             for (IContainerListener listener : ((ContainerCrafterManager) player.openContainer).getListeners()) {
-                ContainerCrafterManager.CrafterManagerListener crafterCrafterManagerListener = (ContainerCrafterManager.CrafterManagerListener) listener;
+                if (listener instanceof ContainerCrafterManager.CrafterManagerListener) {
+                    ContainerCrafterManager.CrafterManagerListener cmListener = (ContainerCrafterManager.CrafterManagerListener) listener;
 
-                if (crafterCrafterManagerListener.getPlayer() == player) {
-                    crafterCrafterManagerListener.setReceivedContainerData();
-                    crafterCrafterManagerListener.sendAllContents(player.openContainer, player.openContainer.getInventory());
+                    if (cmListener.getPlayer() == player) {
+                        cmListener.setReceivedContainerData();
+                        cmListener.sendAllContents(player.openContainer, player.openContainer.getInventory());
+                    }
                 }
             }
         }