diff --git a/src/main/kotlin/net/shadowfacts/phycon/networking/C2STerminalRequestItem.kt b/src/main/kotlin/net/shadowfacts/phycon/networking/C2STerminalRequestItem.kt
index 1d28025..b364d51 100644
--- a/src/main/kotlin/net/shadowfacts/phycon/networking/C2STerminalRequestItem.kt
+++ b/src/main/kotlin/net/shadowfacts/phycon/networking/C2STerminalRequestItem.kt
@@ -26,7 +26,14 @@ object C2STerminalRequestItem: ServerReceiver {
 		val buf = PacketByteBufs.create()
 		buf.writeIdentifier(terminal.world!!.registryKey.value)
 		buf.writeBlockPos(terminal.pos)
-		buf.writeItemStack(stack)
+
+		// Force the count of the stack to be 1 before serializing for the network because
+		// PacketByteBuf serializes the stack count as a byte. Otherwise counts > 127 will result in
+		// an overflow and be negative on the receiving side.
+		val stackCopy = stack.copy()
+		stackCopy.count = 1
+		buf.writeItemStack(stackCopy)
+
 		buf.writeVarInt(amount)
 		return ClientPlayNetworking.createC2SPacket(CHANNEL, buf)
 	}