diff --git a/extensions/openpower-pels/openpower-pels.mk b/extensions/openpower-pels/openpower-pels.mk
index 21eb719..4f424f7 100644
--- a/extensions/openpower-pels/openpower-pels.mk
+++ b/extensions/openpower-pels/openpower-pels.mk
@@ -2,6 +2,7 @@
 	extensions/openpower-pels/bcd_time.cpp \
 	extensions/openpower-pels/data_interface.cpp \
 	extensions/openpower-pels/entry_points.cpp \
+	extensions/openpower-pels/failing_mtms.cpp \
 	extensions/openpower-pels/log_id.cpp \
 	extensions/openpower-pels/manager.cpp \
 	extensions/openpower-pels/mtms.cpp \