diff --git a/src/system/kernel/signal.cpp b/src/system/kernel/signal.cpp
index db85792fa9..fbc37899fb 100644
--- a/src/system/kernel/signal.cpp
+++ b/src/system/kernel/signal.cpp
@@ -63,6 +63,7 @@
 	| SIGNAL_RANGE_TO_MASK(SIGNAL_REALTIME_MIN, SIGNAL_REALTIME_MAX))
 #define NON_DEFERRABLE_SIGNALS	\
 	(KILL_SIGNALS				\
+	| SIGNAL_TO_MASK(SIGNAL_DEBUG_THREAD) \
 	| SIGNAL_TO_MASK(SIGILL)	\
 	| SIGNAL_TO_MASK(SIGFPE)	\
 	| SIGNAL_TO_MASK(SIGSEGV))