diff --git a/source/3/3.1/3.1.6/qps-pref.png b/source/3/3.1/3.1.6/qps-pref.png index 54f5b8e8..beb4d5ad 100644 Binary files a/source/3/3.1/3.1.6/qps-pref.png and b/source/3/3.1/3.1.6/qps-pref.png differ