diff --git a/lib/stroke_extractor.js b/lib/stroke_extractor.js
index 660ab963..2ca8c761 100644
--- a/lib/stroke_extractor.js
+++ b/lib/stroke_extractor.js
@@ -195,6 +195,10 @@ function match_corners(corners) {
 function run_classifier(features) {
   var angle_penalty = Angle.penalty(features[0]) + Angle.penalty(features[1]);
   var distance_penalty = features[6]/MAX_BRIDGE_DISTANCE;
+  if (features[0] > 0 && features[1] > 0 &&
+      features[2] + features[3] < -0.5*Math.PI) {
+    angle_penalty = angle_penalty/16;
+  }
   return -(angle_penalty + distance_penalty);
 }