1 files changed, 1 insertions, 0 deletions

diff --git a/test/test.cc b/test/test.cc
index 2143ac0..770e0c6 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -1,14 +1,15 @@
 #include <iostream>
 #include <stdexcept>
+#include <unistd.h>
 using namespace std;
 #include <opkele/exception.h>
 #include <opkele/util.h>
 
 #include "config.h"
 
 class failed_test : public opkele::exception {
     public:
         failed_test(OPKELE_E_PARS)
             : exception(OPKELE_E_CONS) { }
 };