diff --git a/meta-ibm/recipes-phosphor/libmctp/files/p10bmc/mctp b/meta-ibm/recipes-phosphor/libmctp/files/p10bmc/mctp
index f906220..6bf4409 100644
--- a/meta-ibm/recipes-phosphor/libmctp/files/p10bmc/mctp
+++ b/meta-ibm/recipes-phosphor/libmctp/files/p10bmc/mctp
@@ -1 +1 @@
-DEMUX_BINDING_OPTS=astlpc
+DEMUX_BINDING_OPTS=astlpc /dev/raw-kcs3
diff --git a/meta-ibm/recipes-phosphor/libmctp/files/witherspoon-tacoma/mctp b/meta-ibm/recipes-phosphor/libmctp/files/witherspoon-tacoma/mctp
index f906220..6bf4409 100644
--- a/meta-ibm/recipes-phosphor/libmctp/files/witherspoon-tacoma/mctp
+++ b/meta-ibm/recipes-phosphor/libmctp/files/witherspoon-tacoma/mctp
@@ -1 +1 @@
-DEMUX_BINDING_OPTS=astlpc
+DEMUX_BINDING_OPTS=astlpc /dev/raw-kcs3