diff --git a/api/dbus/org.desktopspec.ApplicationManager1.Application.xml b/api/dbus/org.desktopspec.ApplicationManager1.Application.xml
index 2d33b39..de2f500 100644
--- a/api/dbus/org.desktopspec.ApplicationManager1.Application.xml
+++ b/api/dbus/org.desktopspec.ApplicationManager1.Application.xml
@@ -117,6 +117,14 @@
             <annotation name="org.qtproject.QtDBus.QtTypeName" value="QStringMap"/>
         </property>
 
+        <property name="StartupWMClass" type="s" access="read">
+            <annotation
+                name="org.freedesktop.DBus.Description"
+                value="The meaning of this property's type is same as which in StartupWMClass."
+            />
+            <annotation name="org.qtproject.QtDBus.QtTypeName" value="QStringMap"/>
+        </property>
+
         <method name="Launch">
             <arg type="s" name="action" direction="in" />
             <arg type="as" name="fields" direction="in" />
diff --git a/src/dbus/applicationservice.cpp b/src/dbus/applicationservice.cpp
index 75b387c..f016ebf 100644
--- a/src/dbus/applicationservice.cpp
+++ b/src/dbus/applicationservice.cpp
@@ -559,6 +559,12 @@ bool ApplicationService::terminal() const noexcept
     return false;
 }
 
+QString ApplicationService::startupWMClass() const noexcept
+{
+    auto value = findEntryValue(DesktopFileEntryKey, "StartupWMClass", EntryValueType::String);
+    return value.isNull() ? QString{} : value.toString();
+}
+
 qint64 ApplicationService::installedTime() const noexcept
 {
     return m_installedTime;
@@ -894,6 +900,7 @@ void ApplicationService::resetEntry(DesktopEntry *newEntry) noexcept
     emit terminalChanged();
     emit environChanged();
     emit launchedTimesChanged();
+    emit startupWMClassChanged();
 }
 
 std::optional<QStringList> ApplicationService::unescapeExecArgs(const QString &str) noexcept
diff --git a/src/dbus/applicationservice.h b/src/dbus/applicationservice.h
index f2acd30..df7299d 100644
--- a/src/dbus/applicationservice.h
+++ b/src/dbus/applicationservice.h
@@ -74,6 +74,9 @@ public:
     Q_PROPERTY(bool Terminal READ terminal NOTIFY terminalChanged)
     [[nodiscard]] bool terminal() const noexcept;
 
+    Q_PROPERTY(QString StartupWMClass READ startupWMClass NOTIFY startupWMClassChanged)
+    [[nodiscard]] QString startupWMClass() const noexcept;
+
     // FIXME:
     // This property should implement with fuse guarded
     // $XDG_CONFIG_HOME/autostart/. Current implementation has some problems,
@@ -163,6 +166,7 @@ Q_SIGNALS:
     void terminalChanged();
     void environChanged();
     void launchedTimesChanged();
+    void startupWMClassChanged();
 
 private:
     friend class ApplicationManager1Service;