diff --git a/extensions/openpower-pels/openpower-pels.mk b/extensions/openpower-pels/openpower-pels.mk
index def28a1..6a58db8 100644
--- a/extensions/openpower-pels/openpower-pels.mk
+++ b/extensions/openpower-pels/openpower-pels.mk
@@ -3,6 +3,7 @@
 	extensions/openpower-pels/entry_points.cpp \
 	extensions/openpower-pels/log_id.cpp \
 	extensions/openpower-pels/manager.cpp \
+	extensions/openpower-pels/mtms.cpp \
 	extensions/openpower-pels/paths.cpp \
 	extensions/openpower-pels/pel.cpp \
 	extensions/openpower-pels/private_header.cpp \