diff --git a/extras/Projucer/Source/Application/jucer_MainWindow.cpp b/extras/Projucer/Source/Application/jucer_MainWindow.cpp
index 2f2b7c2c18..10079fb25e 100644
--- a/extras/Projucer/Source/Application/jucer_MainWindow.cpp
+++ b/extras/Projucer/Source/Application/jucer_MainWindow.cpp
@@ -39,9 +39,9 @@ class BlurOverlayWithComponent  : public Component,
 {
 public:
     BlurOverlayWithComponent (MainWindow& window, std::unique_ptr<Component> comp)
-       : ComponentMovementWatcher (&window),
-         mainWindow (window),
-         componentToShow (std::move (comp))
+        : ComponentMovementWatcher (&window),
+          mainWindow (window),
+          componentToShow (std::move (comp))
     {
         kernel.createGaussianBlur (1.25f);
 
@@ -326,6 +326,11 @@ void MainWindow::setProject (std::unique_ptr<Project> newProject)
         getProjectContentComponent()->setProject (currentProject.get());
     }
 
+    if (currentProject != nullptr)
+        currentProject->addChangeListener (this);
+
+    changeListenerCallback (currentProject.get());
+
     projectNameValue.referTo (currentProject != nullptr ? currentProject->getProjectValue (Ids::name) : Value());
     initialiseProjectWindow();
 
@@ -707,6 +712,16 @@ void MainWindow::valueChanged (Value& value)
                                            : "Projucer");
 }
 
+void MainWindow::changeListenerCallback (ChangeBroadcaster* source)
+{
+    auto* project = getProject();
+
+    if (source == project)
+        if (auto* peer = getPeer())
+            peer->setHasChangedSinceSaved (project != nullptr ? project->hasChangedSinceSaved()
+                                                              : false);
+}
+
 //==============================================================================
 MainWindowList::MainWindowList()
 {
diff --git a/extras/Projucer/Source/Application/jucer_MainWindow.h b/extras/Projucer/Source/Application/jucer_MainWindow.h
index ac63ac0e40..0bb11cce25 100644
--- a/extras/Projucer/Source/Application/jucer_MainWindow.h
+++ b/extras/Projucer/Source/Application/jucer_MainWindow.h
@@ -39,7 +39,8 @@ class MainWindow  : public DocumentWindow,
                     public ApplicationCommandTarget,
                     public FileDragAndDropTarget,
                     public DragAndDropContainer,
-                    private Value::Listener
+                    private Value::Listener,
+                    private ChangeListener
 {
 public:
     //==============================================================================
@@ -87,6 +88,7 @@ public:
                                                StringArray& files, bool& canMoveFiles) override;
 private:
     void valueChanged (Value&) override;
+    void changeListenerCallback (ChangeBroadcaster* source) override;
 
     static const char* getProjectWindowPosName()   { return "projectWindowPos"; }
     void createProjectContentCompIfNeeded();