diff --git a/Kernel/kassert.h b/Kernel/kassert.h
index 1ddabe6362..621aa9f4ec 100644
--- a/Kernel/kassert.h
+++ b/Kernel/kassert.h
@@ -2,7 +2,7 @@
 
 #include "VGA.h"
 
-#define CRASH() do { asm volatile("cli;hlt"); } while(0)
+#define CRASH() do { asm volatile("ud2"); } while(0)
 #define ASSERT(x) do { if (!(x)) { kprintf("ASSERTION FAILED: " #x "\n%s:%u in %s\n", __FILE__, __LINE__, __PRETTY_FUNCTION__); CRASH(); } } while(0)
 #define RELEASE_ASSERT(x) do { if (!(x)) CRASH(); } while(0)
 #define ASSERT_NOT_REACHED() ASSERT(false)