diff --git a/tests/sys_epoll_test.cpp b/tests/sys_epoll_test.cpp
index e4e047b..daa064a 100644
--- a/tests/sys_epoll_test.cpp
+++ b/tests/sys_epoll_test.cpp
@@ -17,6 +17,7 @@
 #include <gtest/gtest.h>
 
 #include <errno.h>
+#include <signal.h>
 #include <sys/epoll.h>
 
 TEST(sys_epoll, smoke) {