diff --git a/pcie_i2c.hpp b/pcie_i2c.hpp
index fb4e6d3..ef89865 100644
--- a/pcie_i2c.hpp
+++ b/pcie_i2c.hpp
@@ -11,13 +11,13 @@
 
 //  Handle the pcie slot count command.
 //  Sys can query the number of pcie slots.
-ipmi_ret_t PcieSlotCount(const uint8_t* reqBuf, uint8_t* replyBuf,
+ipmi_ret_t pcieSlotCount(const uint8_t* reqBuf, uint8_t* replyBuf,
                          size_t* dataLen,
                          HandlerInterface* handler = &handlerImpl);
 
 // Handle the pcie slot to i2c bus mapping command.
 // Sys can query which i2c bus is routed to which pcie slot.
-ipmi_ret_t PcieSlotI2cBusMapping(const uint8_t* reqBuf, uint8_t* replyBuf,
+ipmi_ret_t pcieSlotI2cBusMapping(const uint8_t* reqBuf, uint8_t* replyBuf,
                                  size_t* dataLen,
                                  HandlerInterface* handler = &handlerImpl);