diff --git a/src/plugins/qmakeprojectmanager/QmakeProjectManager.mimetypes.xml b/src/plugins/qmakeprojectmanager/QmakeProjectManager.mimetypes.xml
index b9d06e6aeab..1967bc05804 100644
--- a/src/plugins/qmakeprojectmanager/QmakeProjectManager.mimetypes.xml
+++ b/src/plugins/qmakeprojectmanager/QmakeProjectManager.mimetypes.xml
@@ -15,4 +15,19 @@
     <comment>Qt Project feature file</comment>
     <glob pattern="*.prf"/>
   </mime-type>
+  <mime-type type="application/vnd.qt.qmakeproconfigurationfile">
+    <sub-class-of type="text/plain"/>
+    <comment>Qt Project configuration file</comment>
+    <glob pattern=".qmake.conf"/>
+  </mime-type>
+  <mime-type type="application/vnd.qt.qmakeprocachefile">
+    <sub-class-of type="text/plain"/>
+    <comment>Qt Project cache file</comment>
+    <glob pattern=".qmake.cache"/>
+  </mime-type>
+  <mime-type type="application/vnd.qt.qmakeprostashfile">
+    <sub-class-of type="text/plain"/>
+    <comment>Qt Project stash file</comment>
+    <glob pattern=".qmake.stash"/>
+  </mime-type>
 </mime-info>
diff --git a/src/plugins/qmakeprojectmanager/profileeditorfactory.cpp b/src/plugins/qmakeprojectmanager/profileeditorfactory.cpp
index a5473d799cd..223d067957d 100644
--- a/src/plugins/qmakeprojectmanager/profileeditorfactory.cpp
+++ b/src/plugins/qmakeprojectmanager/profileeditorfactory.cpp
@@ -51,6 +51,9 @@ ProFileEditorFactory::ProFileEditorFactory(QmakeManager *manager) :
     addMimeType(QmakeProjectManager::Constants::PROFILE_MIMETYPE);
     addMimeType(QmakeProjectManager::Constants::PROINCLUDEFILE_MIMETYPE);
     addMimeType(QmakeProjectManager::Constants::PROFEATUREFILE_MIMETYPE);
+    addMimeType(QmakeProjectManager::Constants::PROCONFIGURATIONFILE_MIMETYPE);
+    addMimeType(QmakeProjectManager::Constants::PROCACHEFILE_MIMETYPE);
+    addMimeType(QmakeProjectManager::Constants::PROSTASHFILE_MIMETYPE);
     new TextEditor::TextEditorActionHandler(this, Constants::C_PROFILEEDITOR,
                   TextEditor::TextEditorActionHandler::UnCommentSelection
                   | TextEditor::TextEditorActionHandler::JumpToFileUnderCursor);
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
index a729868789e..a4c2b2cdead 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
@@ -48,6 +48,9 @@ const char PROFILE_EDITOR_DISPLAY_NAME[] = QT_TRANSLATE_NOOP("OpenWith::Editors"
 const char PROFILE_MIMETYPE[] = "application/vnd.qt.qmakeprofile";
 const char PROINCLUDEFILE_MIMETYPE [] = "application/vnd.qt.qmakeproincludefile";
 const char PROFEATUREFILE_MIMETYPE [] = "application/vnd.qt.qmakeprofeaturefile";
+const char PROCONFIGURATIONFILE_MIMETYPE [] = "application/vnd.qt.qmakeproconfigurationfile";
+const char PROCACHEFILE_MIMETYPE [] = "application/vnd.qt.qmakeprocachefile";
+const char PROSTASHFILE_MIMETYPE [] = "application/vnd.qt.qmakeprostashfile";
 
 // Actions
 const char RUNQMAKE[] = "Qt4Builder.RunQMake";