diff --git a/src/applicationmodel.cpp b/src/applicationmodel.cpp
index cc8ac6d..0f563ef 100644
--- a/src/applicationmodel.cpp
+++ b/src/applicationmodel.cpp
@@ -129,6 +129,11 @@ void ApplicationModel::removeItem(const QString &desktopFile)
     }
 }
 
+bool ApplicationModel::desktopContains(const QString &desktopFile)
+{
+    return findItemByDesktop(desktopFile) != nullptr;
+}
+
 void ApplicationModel::clicked(const QString &id)
 {
     ApplicationItem *item = findItemById(id);
diff --git a/src/applicationmodel.h b/src/applicationmodel.h
index 9c9bfe6..0a64056 100644
--- a/src/applicationmodel.h
+++ b/src/applicationmodel.h
@@ -49,6 +49,7 @@ public:
 
     void addItem(const QString &desktopFile);
     void removeItem(const QString &desktopFile);
+    bool desktopContains(const QString &desktopFile);
 
     Q_INVOKABLE void save() { savePinAndUnPinList(); }
 
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 92f6e8e..ac46468 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -104,6 +104,14 @@ void MainWindow::remove(const QString &desktop)
     m_appModel->removeItem(desktop);
 }
 
+bool MainWindow::contains(const QString &desktop)
+{
+    if (desktop.isEmpty())
+        return false;
+
+    return m_appModel->desktopContains(desktop);
+}
+
 void MainWindow::updateSize()
 {
     resizeWindow();
diff --git a/src/mainwindow.h b/src/mainwindow.h
index eabfaf3..8f1dbf9 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -37,8 +37,10 @@ public:
     explicit MainWindow(QQuickView *parent = nullptr);
     ~MainWindow();
 
+    // DBus interface
     void add(const QString &desktop);
     void remove(const QString &desktop);
+    bool contains(const QString &desktop);
 
     Q_INVOKABLE void updateSize();
 
diff --git a/src/org.Cutefish.Dock.xml b/src/org.Cutefish.Dock.xml
index e937e91..f445cbf 100644
--- a/src/org.Cutefish.Dock.xml
+++ b/src/org.Cutefish.Dock.xml
@@ -3,5 +3,9 @@
   <interface name="org.cutefish.Dock">
     <method name="add"><arg name="desktopFile" type="s" direction="in"/></method>
     <method name="remove"><arg name="desktopFile" type="s" direction="in"/></method>
+    <method name="contains">
+      <arg name="desktopFile" type="s" direction="in"/>
+      <arg type="b" direction="out"/>
+    </method>
   </interface>
 </node>