diff --git a/src/manufacturingcommands.cpp b/src/manufacturingcommands.cpp
index 4993566..0be16ee 100644
--- a/src/manufacturingcommands.cpp
+++ b/src/manufacturingcommands.cpp
@@ -538,7 +538,7 @@
     }
     else
     {
-        retCode = IPMI_CC_ILLEGAL_COMMAND;
+        retCode = IPMI_CC_INVALID;
     }
 
     *data_len = 0; // Only CC is return for SetSmSignal cmd