diff --git a/sensorhandler.cpp b/sensorhandler.cpp
index 1a66a1e..618aa54 100644
--- a/sensorhandler.cpp
+++ b/sensorhandler.cpp
@@ -552,7 +552,7 @@
     if (ipmi::sensor::Mutability::Read !=
           (iter->second.mutability & ipmi::sensor::Mutability::Read))
     {
-        return IPMI_CC_SENSOR_INVALID;
+        return IPMI_CC_ILLEGAL_COMMAND;
     }
 
     try