diff --git a/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.pluginspec.in b/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.pluginspec.in
index 31bd06076a6c5f1bd12a14927681136356a74326..39a1ce145ae123cd97ebe9bc19f848951f773f6b 100644
--- a/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.pluginspec.in
+++ b/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.pluginspec.in
@@ -1,4 +1,4 @@
-<plugin name=\"AutotoolsProjectManager\" version=\"$$QTCREATOR_VERSION\" compatVersion=\"$$QTCREATOR_VERSION\">
+<plugin name=\"AutotoolsProjectManager\" version=\"$$QTCREATOR_VERSION\" compatVersion=\"$$QTCREATOR_VERSION\" experimental=\"true\">
     <vendor>Openismus GmbH</vendor>
     <copyright>(C) 2010 Openismus GmbH</copyright>
     <license>GNU Lesser General Public License Usage