diff --git a/src/Makefile.am b/src/Makefile.am
index 74f01f5..236e347 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -30,6 +30,9 @@
 nobase_include_HEADERS += sdeventplus/source/io.hpp
 libsdeventplus_la_SOURCES += sdeventplus/source/io.cpp
 
+nobase_include_HEADERS += sdeventplus/source/signal.hpp
+libsdeventplus_la_SOURCES += sdeventplus/source/signal.cpp
+
 nobase_include_HEADERS += sdeventplus/source/time.hpp
 libsdeventplus_la_SOURCES += sdeventplus/source/time.cpp