diff --git a/src/nm-hal-manager.c b/src/nm-hal-manager.c
index 754f9308ac..9adf183fdd 100644
--- a/src/nm-hal-manager.c
+++ b/src/nm-hal-manager.c
@@ -1,3 +1,4 @@
+#include <signal.h>
 #include <string.h>
 #include <stdlib.h>
 #include <libhal.h>