diff --git a/src/main.cpp b/src/main.cpp
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,6 +38,8 @@
 
 int main(int argc, char **argv)
 {
+    // Fixes blurry icons with fractional scaling
+    QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
     QApplication app(argc, argv);
     Kdelibs4ConfigMigrator migrate(QStringLiteral("kdiamond"));
     migrate.setConfigFiles(QStringList() << QStringLiteral("kdiamondrc") << QStringLiteral("kdiamond.notifyrc"));