diff --git a/test/http_tests.cc b/test/http_tests.cc
index d67163d..4429f53 100644
--- a/test/http_tests.cc
+++ b/test/http_tests.cc
@@ -25,6 +25,7 @@
 #include <gtest/gtest.h>
 
 #include <cstring>
+#include <fcntl.h>
 #include <fstream>
 #include <string>