diff --git a/gtkconfig/kded/CMakeLists.txt b/gtkconfig/kded/CMakeLists.txt
--- a/gtkconfig/kded/CMakeLists.txt
+++ b/gtkconfig/kded/CMakeLists.txt
@@ -19,6 +19,7 @@
     Qt5::DBus
     KF5::CoreAddons
     KF5::ConfigCore
+    KF5::IconThemes
     KF5::DBusAddons
     ${GIO2_LIBRARY}
     ${GLIB2_LIBRARY}
diff --git a/gtkconfig/kded/gtkconfig.h b/gtkconfig/kded/gtkconfig.h
--- a/gtkconfig/kded/gtkconfig.h
+++ b/gtkconfig/kded/gtkconfig.h
@@ -35,10 +35,11 @@
     GtkConfig(QObject *parent, const QVariantList& args);
     
     void setFont(const QFont &font);
+    void setIconTheme(int iconGroup);
 
 private:
     QString getConfigFontName(const QFont &font);
-
+    QString getConfigIconThemeName();
 
     QScopedPointer<ConfigEditor> configEditor;
 };
diff --git a/gtkconfig/kded/gtkconfig.cpp b/gtkconfig/kded/gtkconfig.cpp
--- a/gtkconfig/kded/gtkconfig.cpp
+++ b/gtkconfig/kded/gtkconfig.cpp
@@ -26,14 +26,17 @@
 #include <QtDBus/QDBusConnection>
 #include <QGuiApplication>
 
+#include <KIconTheme>
+#include <KIconLoader>
 #include <KPluginFactory>
 
 K_PLUGIN_CLASS_WITH_JSON(GtkConfig, "gtkconfig.json")
 
 GtkConfig::GtkConfig(QObject *parent, const QVariantList&) :
     KDEDModule(parent), configEditor(new ConfigEditor())
 {
     connect(qGuiApp, &QGuiApplication::fontChanged, this, &GtkConfig::setFont);
+    connect(KIconLoader::global(), &KIconLoader::iconChanged, this, &GtkConfig::setIconTheme);
 }
 
 void GtkConfig::setFont(const QFont &font)
@@ -45,11 +48,28 @@
     configEditor->setGtk3ConfigValueX11XSettingsd(QStringLiteral("Gtk/FontName"),  configFontName);
 }
 
+void GtkConfig::setIconTheme(int iconGroup)
+{
+    if (iconGroup == KIconLoader::Group::Desktop) { // This is needed to update icons only once
+        QString iconThemeName(getConfigIconThemeName());
+        configEditor->setGtk2ConfigValue(QStringLiteral("gtk-icon-theme-name"), iconThemeName);
+        configEditor->setGtk3ConfigValueWayland(QStringLiteral("icon-theme"), iconThemeName);
+        configEditor->setGtk3ConfigValueX11SettingsIni(QStringLiteral("gtk-icon-theme-name"), iconThemeName);
+        configEditor->setGtk3ConfigValueX11XSettingsd(QStringLiteral("Net/IconThemeName"),  iconThemeName);
+    }
+}
+
 QString GtkConfig::getConfigFontName(const QFont &font)
 {
     return font.family()
             + ' ' + font.styleName()
             + ' ' + QString::number(font.pointSize());
 }
 
+QString GtkConfig::getConfigIconThemeName()
+{
+    KIconTheme *newIconTheme(KIconLoader::global()->theme());
+    return newIconTheme->internalName();
+}
+
 #include "gtkconfig.moc"