diff --git a/src/wdt.c b/src/wdt.c
index 876a5f0..1cfb2b6 100644
--- a/src/wdt.c
+++ b/src/wdt.c
@@ -18,6 +18,7 @@
 #include <common/initcall.h>
 #include <common/standard.h>
 #include <types/global.h>
+#include <types/signal.h>
 #include <proto/log.h>
 
 
@@ -27,11 +28,6 @@
  */
 #if defined(USE_THREAD) && defined(USE_RT) && (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
 
-/* We'll deliver SIGALRM when we've run out of CPU as it's not intercepted by
- * gdb by default.
- */
-#define WDTSIG SIGALRM
-
 /* Setup (or ping) the watchdog timer for thread <thr>. Returns non-zero on
  * success, zero on failure. It interrupts once per second of CPU time. It
  * happens that timers based on the CPU time are not automatically re-armed