diff --git a/kernel/src/thread/Thread.cpp b/kernel/src/thread/Thread.cpp
index 27c35dcd..6c8e0806 100644
--- a/kernel/src/thread/Thread.cpp
+++ b/kernel/src/thread/Thread.cpp
@@ -206,6 +206,8 @@ bool Thread::will_ignore_pending_signal()
 
 void Thread::send_signal(int signo)
 {
+    if (is_kernel) return;
+
     check(signo > 0 && signo <= NSIG);
     pending_signals |= 1 << (signo - 1);