diff --git a/src/plugins/projectexplorer/projectmodels.cpp b/src/plugins/projectexplorer/projectmodels.cpp
index 3f16be312ee..72a670f4db6 100644
--- a/src/plugins/projectexplorer/projectmodels.cpp
+++ b/src/plugins/projectexplorer/projectmodels.cpp
@@ -77,8 +77,6 @@ FlatModel::FlatModel(QObject *parent)
     connect(&m_timer, &QTimer::timeout, this, &FlatModel::doUpdate);
 
     ProjectTree *tree = ProjectTree::instance();
-    connect(tree, &ProjectTree::dataChanged, this, &FlatModel::update);
-    connect(tree, &ProjectTree::nodeUpdated, this, &FlatModel::update);
     connect(tree, &ProjectTree::subtreeChanged, this, &FlatModel::update);
 
     SessionManager *sm = SessionManager::instance();
diff --git a/src/plugins/projectexplorer/projectnodes.cpp b/src/plugins/projectexplorer/projectnodes.cpp
index ea759cc0ebe..6767b3b1f00 100644
--- a/src/plugins/projectexplorer/projectnodes.cpp
+++ b/src/plugins/projectexplorer/projectnodes.cpp
@@ -129,13 +129,9 @@ void Node::setAbsoluteFilePathAndLine(const Utils::FileName &path, int line)
 
     m_filePath = path;
     m_line = line;
-    emitNodeUpdated();
 }
 
-Node::~Node()
-{
-
-}
+Node::~Node() = default;
 
 NodeType Node::nodeType() const
 {
@@ -225,18 +221,6 @@ void Node::setEnabled(bool enabled)
     if (m_isEnabled == enabled)
         return;
     m_isEnabled = enabled;
-    emitNodeUpdated();
-}
-
-void Node::emitNodeUpdated()
-{
-    if (parentFolderNode())
-        ProjectTree::emitNodeUpdated(this);
-}
-
-void Node::emitTreeChanged()
-{
-    ProjectTree::emitDataChanged();
 }
 
 bool Node::sortByPath(const Node *a, const Node *b)
@@ -532,7 +516,6 @@ void FolderNode::setDisplayName(const QString &name)
     if (m_displayName == name)
         return;
     m_displayName = name;
-    emitNodeUpdated();
 }
 
 void FolderNode::setIcon(const QIcon &icon)
@@ -612,11 +595,6 @@ void FolderNode::removeNode(Node *node)
     m_nodes.removeOne(node);
 }
 
-/*!
-  Sets file nodes specified by \a files to the internal list of the folder
-  and emits the corresponding signals from the projectNode.
-*/
-
 /*!
   Removes all files and subfolders from this folder node.
 */
diff --git a/src/plugins/projectexplorer/projectnodes.h b/src/plugins/projectexplorer/projectnodes.h
index 5d9a621557f..acf9fa05e38 100644
--- a/src/plugins/projectexplorer/projectnodes.h
+++ b/src/plugins/projectexplorer/projectnodes.h
@@ -131,9 +131,6 @@ public:
     void setEnabled(bool enabled);
     void setAbsoluteFilePathAndLine(const Utils::FileName &filePath, int line);
 
-    void emitNodeUpdated();
-    void emitTreeChanged();
-
     virtual FileNode *asFileNode() { return nullptr; }
     virtual const FileNode *asFileNode() const { return nullptr; }
     virtual FolderNode *asFolderNode() { return nullptr; }
diff --git a/src/plugins/projectexplorer/projecttree.cpp b/src/plugins/projectexplorer/projecttree.cpp
index 40d817524d0..12e559bc828 100644
--- a/src/plugins/projectexplorer/projecttree.cpp
+++ b/src/plugins/projectexplorer/projecttree.cpp
@@ -259,13 +259,6 @@ void ProjectTree::updateContext()
     Core::ICore::updateAdditionalContexts(oldContext, newContext);
 }
 
-void ProjectTree::emitNodeUpdated(Node *node)
-{
-    if (!s_instance->isInNodeHierarchy(node))
-        return;
-    emit s_instance->nodeUpdated(node);
-}
-
 void ProjectTree::emitSubtreeChanged(Node *node)
 {
     if (!s_instance->isInNodeHierarchy(node))
@@ -273,11 +266,6 @@ void ProjectTree::emitSubtreeChanged(Node *node)
     emit s_instance->subtreeChanged(node);
 }
 
-void ProjectTree::emitDataChanged()
-{
-    instance()->dataChanged();
-}
-
 void ProjectTree::collapseAll()
 {
     if (m_focusForContextMenu)
diff --git a/src/plugins/projectexplorer/projecttree.h b/src/plugins/projectexplorer/projecttree.h
index 58d15fd049c..64ae2af9ed8 100644
--- a/src/plugins/projectexplorer/projecttree.h
+++ b/src/plugins/projectexplorer/projecttree.h
@@ -62,23 +62,20 @@ public:
 
     static void highlightProject(Project *project, const QString &message);
 
+    void collapseAll();
+
 signals:
     void currentProjectChanged(ProjectExplorer::Project *project);
     void currentNodeChanged();
 
     // Emitted whenever the model needs to send a update signal.
-    void nodeUpdated(ProjectExplorer::Node *node);
     void subtreeChanged(ProjectExplorer::Node *node);
-    void dataChanged();
 
     void aboutToShowContextMenu(ProjectExplorer::Project *project,
                                 ProjectExplorer::Node *node);
 
 public: // for nodes to emit signals, do not call unless you are a node
-    static void emitNodeUpdated(ProjectExplorer::Node *node);
     static void emitSubtreeChanged(ProjectExplorer::Node *node);
-    static void emitDataChanged();
-    void collapseAll();
 
 private:
     void sessionChanged();
diff --git a/src/plugins/projectexplorer/session.cpp b/src/plugins/projectexplorer/session.cpp
index 7b774537c39..87e2b95d496 100644
--- a/src/plugins/projectexplorer/session.cpp
+++ b/src/plugins/projectexplorer/session.cpp
@@ -416,11 +416,6 @@ void SessionManager::addProject(Project *pro)
     connect(pro, &Project::fileListChanged, m_instance, &SessionManager::clearProjectFileCache);
     connect(pro, &Project::projectTreeChanged, m_instance, &SessionManager::updateProjectTree);
 
-    connect(pro, &Project::displayNameChanged, m_instance, [pro] {
-        d->m_sessionNode.emitNodeUpdated();
-        emit m_instance->projectDisplayNameChanged(pro);
-    });
-
     emit m_instance->projectAdded(pro);
     configureEditors(pro);
     connect(pro, &Project::fileListChanged, [pro](){ configureEditors(pro); });