diff --git a/Source/Core/DolphinQt/Settings.cpp b/Source/Core/DolphinQt/Settings.cpp
index a07c06ba15..80a1d85f20 100644
--- a/Source/Core/DolphinQt/Settings.cpp
+++ b/Source/Core/DolphinQt/Settings.cpp
@@ -384,6 +384,7 @@ void Settings::ApplyStyle()
     stylesheet_contents.append(QStringLiteral("%1").arg(tooltip_stylesheet));
   }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
   // For Fusion, define group box style if not already defined.
   if (style_name.compare(QStringLiteral("fusion"), Qt::CaseInsensitive) == 0 &&
       !stylesheet_contents.contains(QStringLiteral("QGroupBox")))
@@ -403,6 +404,7 @@ void Settings::ApplyStyle()
                                               " min-width: 0;"
                                               "}"));
   }
+#endif
 
   qApp->setStyleSheet(stylesheet_contents);
 }