diff --git a/src/util/externalcommand.h b/src/util/externalcommand.h
--- a/src/util/externalcommand.h
+++ b/src/util/externalcommand.h
@@ -122,7 +122,7 @@
     void reportSignal(const QVariantMap&);
 
 public Q_SLOTS:
-    void emitProgress(KJob*, unsigned long percent) { emit progress(percent); };
+    void emitProgress(KJob*, quint32 percent) { emit progress(percent); };
 
 private:
     void setExitCode(int i);
diff --git a/src/util/externalcommand.cpp b/src/util/externalcommand.cpp
--- a/src/util/externalcommand.cpp
+++ b/src/util/externalcommand.cpp
@@ -194,7 +194,7 @@
     }
 
     // TODO KF6:Use new signal-slot syntax
-    connect(m_job, SIGNAL(percent(KJob*, unsigned long)), this, SLOT(emitProgress(KJob*, unsigned long)));
+    connect(m_job, SIGNAL(percent(KJob*, unsigned long)), this, SLOT(emitProgress(KJob*, quint32)));
     connect(m_job, &KAuth::ExecuteJob::newData, this, &ExternalCommand::emitReport);
 
     auto *interface = new org::kde::kpmcore::externalcommand(QStringLiteral("org.kde.kpmcore.externalcommand"),