diff --git a/apps/gpsnav/app_b2.js b/apps/gpsnav/app_b2.js
index ed3035029..ee6519c92 100644
--- a/apps/gpsnav/app_b2.js
+++ b/apps/gpsnav/app_b2.js
@@ -21,7 +21,7 @@ var loc = {
 
 function drawCompass(course) {
   if (!candraw) return;
-  g.reset().clearRect(0, 24, 175, 70);
+  g.reset().clearRect(0, 24, 175, 71);
   g.setFont("Vector", 18);
   var start = course - 90;
   if (start < 0) start += 360;