diff --git a/configure.ac b/configure.ac
index 6e4a88c6..fa4b0fa3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -291,6 +291,7 @@ plugins/Makefile
 uml290/Makefile
 test/Makefile
 introspection/Makefile
+introspection/tests/Makefile
 po/Makefile.in
 docs/Makefile
 docs/man/Makefile
diff --git a/introspection/Makefile.am b/introspection/Makefile.am
index cf91caff..d09c55c6 100644
--- a/introspection/Makefile.am
+++ b/introspection/Makefile.am
@@ -1,3 +1,6 @@
+
+SUBDIRS = . tests
+
 # DBus Introspection files
 XMLS = $(wildcard *.xml)
 xmldir = $(datadir)/dbus-1/interfaces
diff --git a/introspection/tests/Makefile.am b/introspection/tests/Makefile.am
new file mode 100644
index 00000000..4582933a
--- /dev/null
+++ b/introspection/tests/Makefile.am
@@ -0,0 +1,3 @@
+
+# DBus Introspection files
+EXTRA_DIST = org.freedesktop.ModemManager1.Test.xml
diff --git a/introspection/tests/org.freedesktop.ModemManager1.Test.xml b/introspection/tests/org.freedesktop.ModemManager1.Test.xml
new file mode 100644
index 00000000..2048cb4a
--- /dev/null
+++ b/introspection/tests/org.freedesktop.ModemManager1.Test.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<!--
+ ModemManager 1.1 Interface Specification
+
+   Copyright (C) 2013 Aleksander Morgado <aleksander@gnu.org>
+-->
+
+<node name="/" xmlns:doc="http://www.freedesktop.org/dbus/1.0/doc.dtd">
+
+  <!--
+      org.freedesktop.ModemManager1.Test:
+      @short_description: The ModemManager TEST interface.
+
+      The TEST interface defines operations to run ModemManager in a test setup.
+  -->
+  <interface name="org.freedesktop.ModemManager1.Test">
+
+    <!--
+        SetProfile:
+
+        If the message has not yet been sent, queue it for delivery.
+    -->
+    <method name="SetProfile">
+      <arg name="id"     type="s"  direction="in" />
+      <arg name="plugin" type="s"  direction="in" />
+      <arg name="ports"  type="as" direction="in" />
+    </method>
+
+  </interface>
+</node>