diff --git a/Source/Core/DolphinWX/ISOFile.cpp b/Source/Core/DolphinWX/ISOFile.cpp
index ed993cd1cb..4757334778 100644
--- a/Source/Core/DolphinWX/ISOFile.cpp
+++ b/Source/Core/DolphinWX/ISOFile.cpp
@@ -278,10 +278,14 @@ bool GameListItem::ReadPNGBanner(const std::string& path)
 
 wxBitmap GameListItem::ScaleBanner(wxImage* image)
 {
-	double scale = wxTheApp->GetTopWindow()->GetContentScaleFactor();
-	image->Rescale(DVD_BANNER_WIDTH * scale, DVD_BANNER_HEIGHT * scale, wxIMAGE_QUALITY_HIGH);
+	const double gui_scale = wxTheApp->GetTopWindow()->GetContentScaleFactor();
+	const double target_width = DVD_BANNER_WIDTH * gui_scale;
+	const double target_height = DVD_BANNER_HEIGHT * gui_scale;
+	const double banner_scale = std::min(target_width / image->GetWidth(), target_height / image->GetHeight());
+	image->Rescale(image->GetWidth() * banner_scale, image->GetHeight() * banner_scale, wxIMAGE_QUALITY_HIGH);
+	image->Resize(wxSize(target_width, target_height), wxPoint(), 0xFF, 0xFF, 0xFF);
 #ifdef __APPLE__
-	return wxBitmap(*image, -1, scale);
+	return wxBitmap(*image, -1, gui_scale);
 #else
 	return wxBitmap(*image, -1);
 #endif