diff --git a/kernel/kernel/Process.cpp b/kernel/kernel/Process.cpp
index fe217af4..4d176d77 100644
--- a/kernel/kernel/Process.cpp
+++ b/kernel/kernel/Process.cpp
@@ -2505,14 +2505,7 @@ namespace Kernel
 			*oact = m_signal_handlers[signal];
 
 		if (act)
-		{
-			if (act->sa_flags & ~(SA_RESTART))
-			{
-				dwarnln("TODO: sigaction({}, {H})", signal, act->sa_flags);
-				return BAN::Error::from_errno(ENOTSUP);
-			}
 			m_signal_handlers[signal] = *act;
-		}
 
 		return 0;
 	}
diff --git a/kernel/kernel/Thread.cpp b/kernel/kernel/Thread.cpp
index f58072c2..52db624d 100644
--- a/kernel/kernel/Thread.cpp
+++ b/kernel/kernel/Thread.cpp
@@ -507,9 +507,16 @@ namespace Kernel
 		bool has_sa_restart;
 		{
 			SpinLockGuard _(m_process->m_signal_lock);
-			ASSERT(!(m_process->m_signal_handlers[signal].sa_flags & SA_SIGINFO));
-			signal_handler = (vaddr_t)m_process->m_signal_handlers[signal].sa_handler;
-			has_sa_restart = !!(m_process->m_signal_handlers[signal].sa_flags & SA_RESTART);
+
+			auto& handler = m_process->m_signal_handlers[signal];
+
+			ASSERT(!(handler.sa_flags & SA_SIGINFO));
+
+			signal_handler = reinterpret_cast<vaddr_t>(handler.sa_handler);
+			if (handler.sa_flags & SA_RESETHAND)
+				handler.sa_handler = SIG_DFL;
+
+			has_sa_restart = !!(handler.sa_flags & SA_RESTART);
 		}
 
 		m_signal_pending_mask &= ~(1ull << signal);