diff --git a/src/common/quantize.cpp b/src/common/quantize.cpp
index 331a620edd..d78882f673 100644
--- a/src/common/quantize.cpp
+++ b/src/common/quantize.cpp
@@ -48,6 +48,10 @@
 #include "wx/image.h"
 #include "wx/quantize.h"
 
+#ifdef __WXMSW__
+#include <windows.h>
+#endif
+
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/generic/dirctrlg.cpp b/src/generic/dirctrlg.cpp
index b169eb3013..2a98d67f83 100644
--- a/src/generic/dirctrlg.cpp
+++ b/src/generic/dirctrlg.cpp
@@ -47,6 +47,7 @@
 #include "wx/generic/dirctrlg.h"
 
 #ifdef __WXMSW__
+#include <windows.h>
 #include <direct.h>
 #include <stdlib.h>
 #include <ctype.h>
diff --git a/src/msw/makefile.g95 b/src/msw/makefile.g95
index 449b21200b..13b3a489eb 100644
--- a/src/msw/makefile.g95
+++ b/src/msw/makefile.g95
@@ -94,6 +94,7 @@ GENERICOBJS = \
 		$(GENDIR)/tbarsmpl.$(OBJSUFF) \
 		$(GENDIR)/textdlgg.$(OBJSUFF) \
 		$(GENDIR)/tipdlg.$(OBJSUFF) \
+		$(GENDIR)/treectlg.$(OBJSUFF) \
 		$(GENDIR)/treelay.$(OBJSUFF) \
 		$(GENDIR)/wizard.$(OBJSUFF)