diff --git a/linker/linker_debuggerd.h b/linker/linker_debuggerd.h
index d701879..95f99e7 100644
--- a/linker/linker_debuggerd.h
+++ b/linker/linker_debuggerd.h
@@ -28,4 +28,7 @@
 
 #pragma once
 
+#include <signal.h>
+
 void linker_debuggerd_init();
+extern "C" bool debuggerd_handle_signal(int signal_number, siginfo_t* info, void* context);