diff --git a/src/Makefile.am b/src/Makefile.am
index f006891..2943a2c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,12 +10,13 @@
 nobase_include_HEADERS += sdeventplus/exception.hpp
 libsdeventplus_la_SOURCES += sdeventplus/exception.cpp
 
-nobase_include_HEADERS += sdeventplus/source.hpp
-libsdeventplus_la_SOURCES += sdeventplus/source.cpp
-
 nobase_include_HEADERS += sdeventplus/internal/sdevent.hpp
 libsdeventplus_la_SOURCES += sdeventplus/internal/sdevent.cpp
 
 nobase_include_HEADERS += sdeventplus/internal/sdref.hpp
+libsdeventplus_la_SOURCES += sdeventplus/internal/sdref.cpp
+
+nobase_include_HEADERS += sdeventplus/source/base.hpp
+libsdeventplus_la_SOURCES += sdeventplus/source/base.cpp
 
 nobase_include_HEADERS += sdeventplus/test/sdevent.hpp