diff --git a/components/esmterrain/storage.cpp b/components/esmterrain/storage.cpp
index fc56b883c3..f0865a0a98 100644
--- a/components/esmterrain/storage.cpp
+++ b/components/esmterrain/storage.cpp
@@ -1,6 +1,7 @@
 #include "storage.hpp"
 
 #include <set>
+#include <iostream>
 
 #include <osg/Image>
 #include <osg/Plane>