diff --git a/glow/util.cpp b/glow/util.cpp
index 005df9d..e8a5747 100644
--- a/glow/util.cpp
+++ b/glow/util.cpp
@@ -25,6 +25,8 @@
#ifdef _WIN32
#define NOMINMAX
#include <Windows.h>
+#else
+#include <iostream>
#endif
namespace glow