diff --git a/test/unit/test_push_b_segmented.cpp b/test/unit/test_push_b_segmented.cpp
index 3f9d6d9..d31abc4 100644
--- a/test/unit/test_push_b_segmented.cpp
+++ b/test/unit/test_push_b_segmented.cpp
@@ -8,6 +8,8 @@
 #include "gtest/gtest.h"
 
 extern "C" {
+#include <fcntl.h>
+
 #include "large_sort.h"
 #include "push_swap.h"
 }