diff --git a/src/manufacturingcommands.cpp b/src/manufacturingcommands.cpp
index 6aed0e9..42185a7 100644
--- a/src/manufacturingcommands.cpp
+++ b/src/manufacturingcommands.cpp
@@ -1131,9 +1131,13 @@
 ipmi::RspType<std::vector<uint8_t>>
     appSlotI2CMasterWriteRead(uint6_t reserved, uint2_t addressType,
                               uint3_t bbSlotNum, uint3_t riserSlotNum,
-                              uint2_t resvered2, uint8_t slaveAddr,
+                              uint2_t reserved2, uint8_t slaveAddr,
                               uint8_t readCount, std::vector<uint8_t> writeData)
 {
+    if (reserved || reserved2)
+    {
+        return ipmi::responseInvalidFieldRequest();
+    }
     const size_t writeCount = writeData.size();
     std::string i2cBus;
     if (addressType == slotAddressTypeBus)