diff --git a/src/manufacturingcommands.cpp b/src/manufacturingcommands.cpp
index ad38e79..082df1e 100644
--- a/src/manufacturingcommands.cpp
+++ b/src/manufacturingcommands.cpp
@@ -408,7 +408,7 @@
                                    ipmi_data_len_t data_len,
                                    ipmi_context_t context)
 {
-    uint8_t ret = 0;
+    int8_t ret = 0;
     ipmi_ret_t retCode = IPMI_CC_OK;
     SetSmSignalReq* pReq = static_cast<SetSmSignalReq*>(request);
     std::string ledName;