diff --git a/Makefile.am b/Makefile.am
index ef50fa1..cc2374a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,6 +6,7 @@
 openpower_proc_control_SOURCES = \
 	proc_control.cpp \
 	p9_procedures.cpp \
+	filedescriptor.cpp \
 	targeting.cpp
 
 openpower_proc_control_LDFLAGS = $(PHOSPHOR_LOGGING_LIBS) -lstdc++fs