diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,6 @@
 find_package(KF5CoreAddons ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5DBusAddons ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5I18n ${KF5_MIN_VERSION} CONFIG REQUIRED)
-find_package(KF5IconThemes ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5ItemModels ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5JobWidgets ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5KIO ${KF5_MIN_VERSION} CONFIG REQUIRED)
diff --git a/src/pimcommon/CMakeLists.txt b/src/pimcommon/CMakeLists.txt
--- a/src/pimcommon/CMakeLists.txt
+++ b/src/pimcommon/CMakeLists.txt
@@ -170,7 +170,6 @@
     KF5::PimTextEdit
     KF5::XmlGui
     KF5::PimTextEdit
-    KF5::IconThemes
     KF5::Completion
     KF5::KIOWidgets
     Qt5::PrintSupport
diff --git a/src/pimcommon/widgets/simplestringlisteditor.cpp b/src/pimcommon/widgets/simplestringlisteditor.cpp
--- a/src/pimcommon/widgets/simplestringlisteditor.cpp
+++ b/src/pimcommon/widgets/simplestringlisteditor.cpp
@@ -35,7 +35,6 @@
 #include "simplestringlisteditor.h"
 
 #include <QInputDialog>
-#include <kiconloader.h>
 #include <QIcon>
 #include <KLocalizedString>
 #include <KMessageBox>
@@ -136,7 +135,6 @@
         }
         d->mUpButton = new QPushButton(QString(), this);
         d->mUpButton->setIcon(QIcon::fromTheme(QStringLiteral("go-up")));
-        d->mUpButton->setIconSize(QSize(KIconLoader::SizeSmall, KIconLoader::SizeSmall));
         d->mUpButton->setAutoDefault(false);
         d->mUpButton->setEnabled(false);   // no selection yet
         d->mButtonLayout->addWidget(d->mUpButton);
@@ -150,7 +148,6 @@
         }
         d->mDownButton = new QPushButton(QString(), this);
         d->mDownButton->setIcon(QIcon::fromTheme(QStringLiteral("go-down")));
-        d->mDownButton->setIconSize(QSize(KIconLoader::SizeSmall, KIconLoader::SizeSmall));
         d->mDownButton->setAutoDefault(false);
         d->mDownButton->setEnabled(false);   // no selection yet
         d->mButtonLayout->addWidget(d->mDownButton);