--- a/thread.c
+++ b/thread.c
@@ -16,7 +16,7 @@
 #include <string.h>
 #include <pthread.h>
 
-#include "queue.h"
+#include <sys/queue.h>
 
 #ifdef __sun
 #include <atomic.h>
--- a/cache.h
+++ b/cache.h
@@ -2,7 +2,7 @@
 #ifndef CACHE_H
 #define CACHE_H
 #include <pthread.h>
-#include "queue.h"
+#include <sys/queue.h>
 
 #ifndef NDEBUG
 /* may be used for debug purposes */