diff --git a/src/widgets/kpropertiesdialog.cpp b/src/widgets/kpropertiesdialog.cpp
--- a/src/widgets/kpropertiesdialog.cpp
+++ b/src/widgets/kpropertiesdialog.cpp
@@ -1106,9 +1106,11 @@
         sizelay->addWidget(d->m_sizeDetermineButton, 0);
         sizelay->addWidget(d->m_sizeStopButton, 0);
 
-        if (!QStandardPaths::findExecutable(QStringLiteral("filelight")).isEmpty()) {
+        KService::Ptr serv = KService::serviceByDesktopName(QStringLiteral("org.kde.filelight"));
+
+        if (serv) {
             d->m_sizeDetailsButton = new QPushButton(i18n("Explore in Filelight"), d->m_frame);
-            d->m_sizeDetailsButton->setIcon(QIcon::fromTheme(QStringLiteral("filelight")));
+            d->m_sizeDetailsButton->setIcon(QIcon::fromTheme(serv->icon()));
             connect(d->m_sizeDetailsButton, &QPushButton::clicked, this, &KFilePropsPlugin::slotSizeDetails);
             sizelay->addWidget(d->m_sizeDetailsButton, 0);
         }
@@ -1450,7 +1452,8 @@
 void KFilePropsPlugin::slotSizeDetails()
 {
     // Open the current folder in filelight
-    KRun::run((QStandardPaths::findExecutable(QStringLiteral("filelight"))), { properties->url() }, properties->window(), QStringLiteral("Filelight"), QStringLiteral("filelight"));
+    KService::Ptr serv = KService::serviceByDesktopName(QStringLiteral("org.kde.filelight"));
+    KRun::runApplication(*serv, { properties->url() }, properties->window());
 }
 
 KFilePropsPlugin::~KFilePropsPlugin()