diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
index 4b2da3e21..463bed595 100644
--- a/src/test/util_tests.cpp
+++ b/src/test/util_tests.cpp
@@ -14,6 +14,7 @@
 #include <stdint.h>
 #include <vector>
 #ifndef WIN32
+#include <signal.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #endif