diff --git a/runtime/include/software_interrupt.h b/runtime/include/software_interrupt.h
index 9412dbc..a49cd86 100644
--- a/runtime/include/software_interrupt.h
+++ b/runtime/include/software_interrupt.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <assert.h>
+#include <errno.h>
 #include <panic.h>
 #include <pthread.h>
 #include <signal.h>