diff --git a/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
index 88ffb005d..f7895797c 100644
--- a/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
+++ b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
@@ -43,7 +43,7 @@ public class Protocol1_17_1To1_17 extends AbstractProtocol<ClientboundPackets1_1
         registerClientbound(ClientboundPackets1_17.SET_SLOT, new PacketRemapper() {
             @Override
             public void registerMap() {
-                map(Type.BYTE); // Container id
+                map(Type.UNSIGNED_BYTE); // Container id
                 create(Type.VAR_INT, 0); // Add arbitrary state id
             }
         });