diff --git a/apps/openmw/mwmechanics/summoning.cpp b/apps/openmw/mwmechanics/summoning.cpp
index d248b34ba..636e19907 100644
--- a/apps/openmw/mwmechanics/summoning.cpp
+++ b/apps/openmw/mwmechanics/summoning.cpp
@@ -1,5 +1,7 @@
 #include "summoning.hpp"
 
+#include <iostream>
+
 #include "../mwbase/environment.hpp"
 #include "../mwbase/world.hpp"