diff --git a/msvc/unicorn/unicorn/unicorn.vcxproj b/msvc/unicorn/unicorn/unicorn.vcxproj
index 6a3fb2f2..1eb39037 100644
--- a/msvc/unicorn/unicorn/unicorn.vcxproj
+++ b/msvc/unicorn/unicorn/unicorn.vcxproj
@@ -211,6 +211,7 @@ copy $(SolutionDir)..\include\unicorn\*.h $(SolutionDir)distro\include\unicorn\
     <ClCompile Include="..\..\..\qemu\qobject\qfloat.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qint.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qlist.c" />
+    <ClCompile Include="..\..\..\qemu\qobject\qnull.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qstring.c" />
     <ClCompile Include="..\..\..\qemu\qom\container.c" />
     <ClCompile Include="..\..\..\qemu\qom\cpu.c" />
diff --git a/msvc/unicorn/unicorn/unicorn.vcxproj.filters b/msvc/unicorn/unicorn/unicorn.vcxproj.filters
index 8fa49664..fcc0b331 100644
--- a/msvc/unicorn/unicorn/unicorn.vcxproj.filters
+++ b/msvc/unicorn/unicorn/unicorn.vcxproj.filters
@@ -98,6 +98,9 @@
     <ClCompile Include="..\..\..\qemu\qobject\qlist.c">
       <Filter>qemu\qobject</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\qemu\qobject\qnull.c">
+      <Filter>qemu\qobject</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\qemu\qobject\qstring.c">
       <Filter>qemu\qobject</Filter>
     </ClCompile>
diff --git a/msvc/unicorn/unicorn_static/unicorn_static.vcxproj b/msvc/unicorn/unicorn_static/unicorn_static.vcxproj
index 50b50153..9417890a 100644
--- a/msvc/unicorn/unicorn_static/unicorn_static.vcxproj
+++ b/msvc/unicorn/unicorn_static/unicorn_static.vcxproj
@@ -39,6 +39,7 @@
     <ClCompile Include="..\..\..\qemu\qobject\qfloat.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qint.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qlist.c" />
+    <ClCompile Include="..\..\..\qemu\qobject\qnull.c" />
     <ClCompile Include="..\..\..\qemu\qobject\qstring.c" />
     <ClCompile Include="..\..\..\qemu\qom\container.c" />
     <ClCompile Include="..\..\..\qemu\qom\cpu.c" />
diff --git a/msvc/unicorn/unicorn_static/unicorn_static.vcxproj.filters b/msvc/unicorn/unicorn_static/unicorn_static.vcxproj.filters
index c4c14407..3a3ed5e8 100644
--- a/msvc/unicorn/unicorn_static/unicorn_static.vcxproj.filters
+++ b/msvc/unicorn/unicorn_static/unicorn_static.vcxproj.filters
@@ -132,6 +132,9 @@
     <ClCompile Include="..\..\..\qemu\qobject\qlist.c">
       <Filter>qemu\qobject</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\qemu\qobject\qnull.c">
+      <Filter>qemu\qobject</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\qemu\qobject\qstring.c">
       <Filter>qemu\qobject</Filter>
     </ClCompile>
diff --git a/qemu/include/qapi/qmp/qobject.h b/qemu/include/qapi/qmp/qobject.h
index b100d4b3..3262e8d6 100644
--- a/qemu/include/qapi/qmp/qobject.h
+++ b/qemu/include/qapi/qmp/qobject.h
@@ -3,7 +3,7 @@
  *
  * Based on ideas by Avi Kivity <avi@redhat.com>
  *
- * Copyright (C) 2009 Red Hat Inc.
+ * Copyright (C) 2009, 2015 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitulino@redhat.com>
@@ -37,6 +37,7 @@
 
 typedef enum {
     QTYPE_NONE,
+    QTYPE_QNULL,
     QTYPE_QINT,
     QTYPE_QSTRING,
     QTYPE_QDICT,
@@ -111,4 +112,12 @@ static inline qtype_code qobject_type(const QObject *obj)
     return obj->type->code;
 }
 
+extern QObject qnull_;
+
+static inline QObject *qnull(void)
+{
+    qobject_incref(&qnull_);
+    return &qnull_;
+}
+
 #endif /* QOBJECT_H */
diff --git a/qemu/qobject/Makefile.objs b/qemu/qobject/Makefile.objs
index 07a9c64c..53714657 100644
--- a/qemu/qobject/Makefile.objs
+++ b/qemu/qobject/Makefile.objs
@@ -1 +1 @@
-util-obj-y = qint.o qstring.o qdict.o qlist.o qfloat.o qbool.o
+util-obj-y = qint.o qnull.o qstring.o qdict.o qlist.o qfloat.o qbool.o
diff --git a/qemu/qobject/qnull.c b/qemu/qobject/qnull.c
new file mode 100644
index 00000000..68f425a0
--- /dev/null
+++ b/qemu/qobject/qnull.c
@@ -0,0 +1,29 @@
+/*
+ * QNull
+ *
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * Authors:
+ *  Markus Armbruster <armbru@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1
+ * or later.  See the COPYING.LIB file in the top-level directory.
+ */
+
+#include "qemu-common.h"
+#include "qapi/qmp/qobject.h"
+
+static void qnull_destroy_obj(QObject *obj)
+{
+    assert(0);
+}
+
+static const QType qnull_type = {
+    QTYPE_QNULL,
+    qnull_destroy_obj,
+};
+
+QObject qnull_ = {
+    &qnull_type,
+    1,
+};