diff --git a/sdk/plugins/quality.cpp b/sdk/plugins/quality.cpp
index 561fa48..be2730c 100644
--- a/sdk/plugins/quality.cpp
+++ b/sdk/plugins/quality.cpp
@@ -79,7 +79,7 @@ struct KDE
     double mean, stddev;
     QList<float> bins;
 
-    KDE() : min(0), max(1) {}
+    KDE() : min(0), max(1), mean(0), stddev(1) {}
     KDE(const QList<float> &scores)
     {
         Common::MinMax(scores, &min, &max);