1 files changed, 5 insertions, 1 deletions
diff --git a/kern/thread.h b/kern/thread.h
index 14fd8669..074963de 100644
--- a/kern/thread.h
+++ b/kern/thread.h
@@ -36,10 +36,14 @@
 #include <kern/assert.h>
 #include <kern/cpumap.h>
 #include <kern/macros.h>
-#include <kern/types.h>
 #include <machine/tcb.h>
 
 /*
+ * Forward declaration
+ */
+struct spinlock;
+
+/*
  * Thread structure.
  */
 struct thread;