diff --git a/source/graphics/Unit.h b/source/graphics/Unit.h
index bd26a29898..a9616c8280 100644
--- a/source/graphics/Unit.h
+++ b/source/graphics/Unit.h
@@ -18,6 +18,7 @@
 #ifndef INCLUDED_UNIT
 #define INCLUDED_UNIT
 
+#include <map>
 #include <set>
 
 #include "ps/CStr.h"
diff --git a/source/ps/Util.cpp b/source/ps/Util.cpp
index 2294e4f334..1c499f660c 100644
--- a/source/ps/Util.cpp
+++ b/source/ps/Util.cpp
@@ -48,6 +48,9 @@
 #include "maths/MathUtil.h"
 #include "graphics/GameView.h"
 
+#include <iomanip>
+#include <sstream>
+
 extern CStrW g_CursorName;
 
 static std::string SplitExts(const char *exts)