diff --git a/src/FrameworkWidgetFactory.cpp b/src/FrameworkWidgetFactory.cpp
index 66c8c228..01ac256d 100644
--- a/src/FrameworkWidgetFactory.cpp
+++ b/src/FrameworkWidgetFactory.cpp
@@ -252,25 +252,15 @@ QIcon DefaultWidgetFactory::iconForButtonType(TitleBarButtonType type, qreal dpr
         return {};
 
     QIcon icon(QStringLiteral(":/img/%1.png").arg(iconName));
-
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 2)
-    const bool isFractional = int(dpr) != dpr;
-    if (isFractional) {
-        // We don't support 1.5x yet.
-        // Problem with Linux is that rendering is off due to a rounding bug only fixed in 5.15.2
-        // Will enable for fractional later.
-        // QTBUG-86170
-        // Mostly affects Linux. Unless you're using Qt::HighDpiScaleFactorRoundingPolicy::PassThrough, in which case it will
-        // affect other OSes too.
+    if (!scalingFactorIsSupported(dpr))
         return icon;
-    }
-#else
+
     // Not using Qt's sugar syntax, which doesn't support 1.5x anyway when we need it.
     // Simply add the high-res files and Qt will pick them when needed
 
-    icon.addFile(QStringLiteral(":/img/%1-1.5x.png").arg(iconName));
-    Q_UNUSED(dpr);
-#endif
+    if (scalingFactorIsSupported(1.5))
+        icon.addFile(QStringLiteral(":/img/%1-1.5x.png").arg(iconName));
+
     icon.addFile(QStringLiteral(":/img/%1-2x.png").arg(iconName));
 
     return icon;
diff --git a/src/private/Utils_p.h b/src/private/Utils_p.h
index ee43c3b9..9fd46e35 100644
--- a/src/private/Utils_p.h
+++ b/src/private/Utils_p.h
@@ -325,6 +325,21 @@ inline QRect globalGeometry(QWidgetOrQuick *w)
     return geo;
 }
 
+/// @brief Returns whether we support the specified scalling factor
+/// This is a workaround against a bug in older Qt (QTBUG-86170).
+/// Mostly affects Linux. Unless you're using Qt::HighDpiScaleFactorRoundingPolicy::PassThrough, in which case it will affect other OSes too.
+inline bool scalingFactorIsSupported(qreal factor)
+{
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 2)
+    // We don't support fractional factors in older Qt.
+    const bool isInteger = int(factor) == factor;
+    return isInteger;
+#else
+    Q_UNUSED(factor);
+    return true;
+#endif
+}
+
 };
 
 #endif