diff --git a/src/plugins/tasklist/taskfile.cpp b/src/plugins/tasklist/taskfile.cpp
index 9f84664edb2..53243a814b7 100644
--- a/src/plugins/tasklist/taskfile.cpp
+++ b/src/plugins/tasklist/taskfile.cpp
@@ -38,8 +38,7 @@ using namespace TaskList::Internal;
 // TaskFile
 // --------------------------------------------------------------------------
 
-TaskFile::TaskFile(QObject *parent) : Core::IDocument(parent),
-    m_context(0)
+TaskFile::TaskFile(QObject *parent) : Core::IDocument(parent)
 { }
 
 TaskFile::~TaskFile()
@@ -101,16 +100,15 @@ bool TaskFile::reload(QString *errorString, ReloadFlag flag, ChangeType type)
 bool TaskFile::open(QString *errorString, const QString &fileName)
 {
     setFilePath(fileName);
-    return TaskList::TaskListPlugin::loadFile(errorString, m_context, fileName);
+    return TaskList::TaskListPlugin::loadFile(errorString, m_baseDir, fileName);
 }
 
-ProjectExplorer::Project *TaskFile::context() const
+QString TaskFile::baseDir() const
 {
-    return m_context;
+    return m_baseDir;
 }
 
-void TaskFile::setContext(ProjectExplorer::Project *context)
+void TaskFile::setBaseDir(const QString &base)
 {
-    m_context = context;
+    m_baseDir = base;
 }
-
diff --git a/src/plugins/tasklist/taskfile.h b/src/plugins/tasklist/taskfile.h
index 268d607feec..05781d23553 100644
--- a/src/plugins/tasklist/taskfile.h
+++ b/src/plugins/tasklist/taskfile.h
@@ -59,11 +59,11 @@ public:
 
     bool open(QString *errorString, const QString &fileName);
 
-    ProjectExplorer::Project *context() const;
-    void setContext(ProjectExplorer::Project *context);
+    QString baseDir() const;
+    void setBaseDir(const QString &base);
 
 private:
-    ProjectExplorer::Project *m_context;
+    QString m_baseDir;
 };
 
 } // namespace Internal
diff --git a/src/plugins/tasklist/taskfilefactory.cpp b/src/plugins/tasklist/taskfilefactory.cpp
index 19c67ada1e6..08ee6425383 100644
--- a/src/plugins/tasklist/taskfilefactory.cpp
+++ b/src/plugins/tasklist/taskfilefactory.cpp
@@ -32,6 +32,7 @@
 #include "taskfile.h"
 
 #include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/project.h>
 #include <coreplugin/icore.h>
 #include <coreplugin/documentmanager.h>
 
@@ -53,14 +54,14 @@ TaskFileFactory::TaskFileFactory(QObject * parent) :
 
 Core::IDocument *TaskFileFactory::open(const QString &fileName)
 {
-    ProjectExplorer::Project *context = ProjectExplorer::ProjectExplorerPlugin::currentProject();
-    return open(context, fileName);
+    ProjectExplorer::Project *project = ProjectExplorer::ProjectExplorerPlugin::currentProject();
+    return open(project ? project->projectDirectory() : QString(), fileName);
 }
 
-Core::IDocument *TaskFileFactory::open(ProjectExplorer::Project *context, const QString &fileName)
+Core::IDocument *TaskFileFactory::open(const QString &base, const QString &fileName)
 {
     TaskFile *file = new TaskFile(this);
-    file->setContext(context);
+    file->setBaseDir(base);
 
     QString errorString;
     if (!file->open(&errorString, fileName)) {
diff --git a/src/plugins/tasklist/taskfilefactory.h b/src/plugins/tasklist/taskfilefactory.h
index 9dc7bbec159..587c53ace0b 100644
--- a/src/plugins/tasklist/taskfilefactory.h
+++ b/src/plugins/tasklist/taskfilefactory.h
@@ -46,7 +46,7 @@ public:
     TaskFileFactory(QObject *parent = 0);
 
     Core::IDocument *open(const QString &fileName);
-    Core::IDocument *open(ProjectExplorer::Project *context, const QString &fileName);
+    Core::IDocument *open(const QString &base, const QString &fileName);
 
     void closeAllFiles();
 
diff --git a/src/plugins/tasklist/tasklistplugin.cpp b/src/plugins/tasklist/tasklistplugin.cpp
index 9cbbab8b97b..cc408202b45 100644
--- a/src/plugins/tasklist/tasklistplugin.cpp
+++ b/src/plugins/tasklist/tasklistplugin.cpp
@@ -50,7 +50,7 @@ using namespace ProjectExplorer;
 using namespace TaskList::Internal;
 
 static const char SESSION_FILE_KEY[] = "TaskList.File";
-static const char SESSION_CONTEXT_KEY[] = "TaskList.Context";
+static const char SESSION_BASE_KEY[] = "TaskList.BaseDir";
 
 namespace TaskList {
 
@@ -102,7 +102,7 @@ static QString unescape(const QString &input)
     return result;
 }
 
-static bool parseTaskFile(QString *errorString, Project *context, const QString &name)
+static bool parseTaskFile(QString *errorString, const QString &base, const QString &name)
 {
     QFile tf(name);
     if (!tf.open(QIODevice::ReadOnly)) {
@@ -142,8 +142,8 @@ static bool parseTaskFile(QString *errorString, Project *context, const QString
         if (!file.isEmpty()) {
             file = QDir::fromNativeSeparators(file);
             QFileInfo fi(file);
-            if (fi.isRelative() && context) {
-                QString fullPath = context->projectDirectory() + QLatin1Char('/') + file;
+            if (fi.isRelative() && !base.isEmpty()) {
+                QString fullPath = base + QLatin1Char('/') + file;
                 fi.setFile(fullPath);
                 file = fi.absoluteFilePath();
             }
@@ -182,14 +182,13 @@ bool TaskListPlugin::initialize(const QStringList &arguments, QString *errorMess
     return true;
 }
 
-bool TaskListPlugin::loadFile(QString *errorString, Project *context, const QString &fileName)
+bool TaskListPlugin::loadFile(QString *errorString, const QString &context, const QString &fileName)
 {
     clearTasks();
 
     bool result = parseTaskFile(errorString, context, fileName);
     if (result) {
-        SessionManager::setValue(QLatin1String(SESSION_CONTEXT_KEY),
-                                 context ? context->projectFilePath() : QString());
+        SessionManager::setValue(QLatin1String(SESSION_BASE_KEY), context);
         SessionManager::setValue(QLatin1String(SESSION_FILE_KEY), fileName);
     } else {
         stopMonitoring();
@@ -200,7 +199,7 @@ bool TaskListPlugin::loadFile(QString *errorString, Project *context, const QStr
 
 void TaskListPlugin::stopMonitoring()
 {
-    SessionManager::setValue(QLatin1String(SESSION_CONTEXT_KEY), QString());
+    SessionManager::setValue(QLatin1String(SESSION_BASE_KEY), QString());
     SessionManager::setValue(QLatin1String(SESSION_FILE_KEY), QString());
 
     m_fileFactory->closeAllFiles();
@@ -216,8 +215,7 @@ void TaskListPlugin::loadDataFromSession()
     const QString fileName = SessionManager::value(QLatin1String(SESSION_FILE_KEY)).toString();
     if (fileName.isEmpty())
         return;
-    Project *project = SessionManager::projectForFile(SessionManager::value(QLatin1String(SESSION_CONTEXT_KEY)).toString());
-    m_fileFactory->open(project, fileName);
+    m_fileFactory->open(SessionManager::value(QLatin1String(SESSION_BASE_KEY)).toString(), fileName);
 }
 
 } // namespace TaskList
diff --git a/src/plugins/tasklist/tasklistplugin.h b/src/plugins/tasklist/tasklistplugin.h
index 772bf8f3d90..7439bbfcb36 100644
--- a/src/plugins/tasklist/tasklistplugin.h
+++ b/src/plugins/tasklist/tasklistplugin.h
@@ -45,7 +45,7 @@ public:
     bool initialize(const QStringList &arguments, QString *errorMessage);
     void extensionsInitialized() {}
 
-    static bool loadFile(QString *errorString, ProjectExplorer::Project *context, const QString &fileName);
+    static bool loadFile(QString *errorString, const QString &context, const QString &fileName);
 
     static void stopMonitoring();
     static void clearTasks();