diff --git a/kcms/baloo/configwidget.ui b/kcms/baloo/configwidget.ui
--- a/kcms/baloo/configwidget.ui
+++ b/kcms/baloo/configwidget.ui
@@ -61,6 +61,16 @@
      </layout>
     </widget>
    </item>
+   <item alignment="Qt::AlignRight">
+    <widget class="QPushButton" name="m_rebuildDatabaseButton">
+     <property name="text">
+      <string>Rebuild Index Database</string>
+     </property>
+     <property name="icon">
+      <iconset theme="run-build-clean"/>
+     </property>
+    </widget>
+   </item>
    <item>
     <spacer name="bottomSpacer">
      <property name="orientation">
diff --git a/kcms/baloo/kcm.h b/kcms/baloo/kcm.h
--- a/kcms/baloo/kcm.h
+++ b/kcms/baloo/kcm.h
@@ -39,8 +39,8 @@
     void save() override;
     void defaults() override;
     void indexingEnabledChanged();
-
     void onDirectoryListChanged();
+    void rebuildIndexDatabase();
 private:
     bool m_previouslyEnabled;
     /**
diff --git a/kcms/baloo/kcm.cpp b/kcms/baloo/kcm.cpp
--- a/kcms/baloo/kcm.cpp
+++ b/kcms/baloo/kcm.cpp
@@ -31,9 +31,11 @@
 #include <QPushButton>
 #include <QDir>
 #include <QProcess>
+#include <QMessageBox>
 #include <QDBusConnection>
 #include <QDBusMessage>
 #include <QDBusPendingCall>
+#include <QStandardPaths>
 #include <QStorageInfo>
 
 #include <Baloo/IndexerConfig>
@@ -77,6 +79,8 @@
             this, SLOT(changed()));
     connect(m_enableCheckbox, SIGNAL(stateChanged(int)),
             this, SLOT(indexingEnabledChanged()));
+    connect(m_rebuildDatabaseButton, SIGNAL(clicked()),
+            this, SLOT(rebuildIndexDatabase()));
 }
 
 
@@ -182,4 +186,33 @@
     return false;
 }
 
+void ServerConfigModule::rebuildIndexDatabase()
+{
+    // balooctl stop && rm -r .local/share/baloo && balooctl start
+    QProcess *proc = new QProcess(this);
+    const QString dataDir = QStandardPaths::writableLocation(
+                                QStandardPaths::GenericDataLocation
+                            ) + QStringLiteral("/baloo");
+    const QString rm = QStandardPaths::findExecutable(QStringLiteral("rm"));
+    const QString balooctl = QStandardPaths::findExecutable(QStringLiteral("balooctl"));
+    const QString baloofile = QStandardPaths::findExecutable(QStringLiteral("baloo_file"));
+
+    QStringList args1;
+    args1 << QStringLiteral("stop");
+    proc->start(balooctl, args1);
+    proc->waitForFinished();
+
+    QStringList args2;
+    args2 << QStringLiteral("-r") << dataDir;
+    proc->start(rm, args2);
+    proc->waitForFinished();
+
+    // "balooctl start" isn't reliable, so here we run "baloo_file" directly
+    QProcess::startDetached(baloofile, QStringList());
+
+    QMessageBox msgBox;
+    msgBox.setText(i18n("Index database has been rebuilt successfully!"));
+    msgBox.exec();
+}
+
 #include "kcm.moc"