diff --git a/gi-dump-types.c b/gi-dump-types.c
index 8dae9c027..aeef774ce 100644
--- a/gi-dump-types.c
+++ b/gi-dump-types.c
@@ -1,6 +1,7 @@
 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
 #include "gdump.c"
 #ifdef G_OS_WIN32
+  #include <windows.h>
   #include <io.h>  /* For _get_osfhandle() */
   #include <gio/gwin32outputstream.h>
 #else
diff --git a/meson.build b/meson.build
index 6cd8fd303..c8ef6aa95 100644
--- a/meson.build
+++ b/meson.build
@@ -204,7 +204,7 @@ gthash_test = executable('gthash-test', 'gthash-test.c',
 
 test('gthash-test', gthash_test)
 
-if giounix_dep.found()
+if giounix_dep.found() or giowin_dep.found()
   executable('gi-dump-types', 'gi-dump-types.c',
-    dependencies: [girepo_dep, giounix_dep])
+    dependencies: [girepo_dep, giounix_dep, giowin_dep])
 endif