IPMI soft power off
diff --git a/ipmid-api.h b/ipmid-api.h
index 5da7636..2d58961 100644
--- a/ipmid-api.h
+++ b/ipmid-api.h
@@ -53,7 +53,7 @@
// information of netfn, cmd, callback handler pointer and context data.
// Making this a extern "C" so that plugin libraries written in C can also use
// it.
-extern "C" void ipmi_register_callback(ipmi_netfn_t, ipmi_cmd_t,
+extern "C" void ipmi_register_callback(ipmi_netfn_t, ipmi_cmd_t,
ipmi_context_t, ipmid_callback_t);
// These are the command network functions, the response