diff --git a/src/tests/core-util-test.c b/src/tests/core-util-test.c
index c8e0faee4..8d1db0c07 100644
--- a/src/tests/core-util-test.c
+++ b/src/tests/core-util-test.c
@@ -19,6 +19,8 @@
 #include <config.h>
 #endif
 
+#include <signal.h>
+
 #include <check.h>
 
 #include <pulse/xmalloc.h>