diff --git a/src/plugins/classview/classviewparser.cpp b/src/plugins/classview/classviewparser.cpp
index 33ef4909c5c..b4bd9a36bce 100644
--- a/src/plugins/classview/classviewparser.cpp
+++ b/src/plugins/classview/classviewparser.cpp
@@ -679,7 +679,6 @@ QList<ProjectExplorer::Project *> Parser::getProjectList() const
     // check all projects
     ProjectExplorer::SessionManager *sessionManager
             = ProjectExplorer::ProjectExplorerPlugin::instance()->session();
-    QTC_ASSERT(sessionManager, return list);
 
     list = sessionManager->projects();
 
diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index 54c6dbe51d5..4000228aae1 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -673,8 +673,6 @@ CppModelManager::CppModelManager(QObject *parent)
     QTC_ASSERT(pe, return);
 
     ProjectExplorer::SessionManager *session = pe->session();
-    QTC_ASSERT(session, return);
-
     m_updateEditorSelectionsTimer = new QTimer(this);
     m_updateEditorSelectionsTimer->setInterval(500);
     m_updateEditorSelectionsTimer->setSingleShot(true);
diff --git a/src/plugins/projectexplorer/allprojectsfilter.cpp b/src/plugins/projectexplorer/allprojectsfilter.cpp
index 99e62c49851..36efc2f0f86 100644
--- a/src/plugins/projectexplorer/allprojectsfilter.cpp
+++ b/src/plugins/projectexplorer/allprojectsfilter.cpp
@@ -62,10 +62,7 @@ void AllProjectsFilter::updateFiles()
         return;
     m_filesUpToDate = true;
     files().clear();
-    SessionManager *session = m_projectExplorer->session();
-    if (!session)
-        return;
-    foreach (Project *project, session->projects())
+    foreach (Project *project, m_projectExplorer->session()->projects())
         files().append(project->files(Project::AllFiles));
     qSort(files());
     generateFileNames();
diff --git a/src/plugins/projectexplorer/allprojectsfind.cpp b/src/plugins/projectexplorer/allprojectsfind.cpp
index 09099cf41d4..1a883c34c8c 100644
--- a/src/plugins/projectexplorer/allprojectsfind.cpp
+++ b/src/plugins/projectexplorer/allprojectsfind.cpp
@@ -73,7 +73,6 @@ QString AllProjectsFind::displayName() const
 bool AllProjectsFind::isEnabled() const
 {
     return BaseFileFind::isEnabled()
-            && m_plugin->session() != 0
             && m_plugin->session()->projects().count() > 0;
 }
 
@@ -81,7 +80,6 @@ Utils::FileIterator *AllProjectsFind::files(const QStringList &nameFilters,
                                             const QVariant &additionalParameters) const
 {
     Q_UNUSED(additionalParameters)
-    QTC_ASSERT(m_plugin->session(), return new Utils::FileIterator());
     return filesForProjects(nameFilters, m_plugin->session()->projects());
 }
 
diff --git a/src/plugins/projectexplorer/currentprojectfind.cpp b/src/plugins/projectexplorer/currentprojectfind.cpp
index 993219e22b0..62c7dbceb44 100644
--- a/src/plugins/projectexplorer/currentprojectfind.cpp
+++ b/src/plugins/projectexplorer/currentprojectfind.cpp
@@ -83,7 +83,6 @@ QVariant CurrentProjectFind::additionalParameters() const
 Utils::FileIterator *CurrentProjectFind::files(const QStringList &nameFilters,
                            const QVariant &additionalParameters) const
 {
-    QTC_ASSERT(m_plugin->session(), return new Utils::FileIterator());
     QTC_ASSERT(additionalParameters.isValid(), return new Utils::FileIterator());
     QList<Project *> allProjects = m_plugin->session()->projects();
     QString projectFile = additionalParameters.toString();
diff --git a/src/plugins/qmljstools/qmljsmodelmanager.cpp b/src/plugins/qmljstools/qmljsmodelmanager.cpp
index 5dc59ae2a77..6c4367bbe3a 100644
--- a/src/plugins/qmljstools/qmljsmodelmanager.cpp
+++ b/src/plugins/qmljstools/qmljsmodelmanager.cpp
@@ -155,10 +155,8 @@ void ModelManager::delayedInitialization()
     }
 
     ProjectExplorer::SessionManager *sessionManager = ProjectExplorer::ProjectExplorerPlugin::instance()->session();
-    if (sessionManager) {
-        connect(sessionManager, SIGNAL(projectRemoved(ProjectExplorer::Project*)),
-                this, SLOT(removeProjectInfo(ProjectExplorer::Project*)));
-    }
+    connect(sessionManager, SIGNAL(projectRemoved(ProjectExplorer::Project*)),
+            this, SLOT(removeProjectInfo(ProjectExplorer::Project*)));
 }
 
 void ModelManager::loadQmlTypeDescriptions()
@@ -807,8 +805,6 @@ ModelManager::CppDataHash ModelManager::cppData() const
 LibraryInfo ModelManager::builtins(const Document::Ptr &doc) const
 {
     ProjectExplorer::SessionManager *sessionManager = ProjectExplorer::ProjectExplorerPlugin::instance()->session();
-    if (!sessionManager)
-        return LibraryInfo();
     ProjectExplorer::Project *project = sessionManager->projectForFile(doc->fileName());
     if (!project)
         return LibraryInfo();