diff --git a/main.js b/main.js
index 25a855136..e3afc9bd8 100644
--- a/main.js
+++ b/main.js
@@ -184,7 +184,7 @@ window.TEAM_TO_CSS = ['none', 'res', 'enl'];
 
 window.SLOT_TO_LAT = [0, Math.sqrt(2)/2, 1, Math.sqrt(2)/2, 0, -Math.sqrt(2)/2, -1, -Math.sqrt(2)/2];
 window.SLOT_TO_LNG = [1, Math.sqrt(2)/2, 0, -Math.sqrt(2)/2, -1, -Math.sqrt(2)/2, 0, Math.sqrt(2)/2];
-window.EARTH_RADIUS=6378137;
+window.EARTH_RADIUS=6367000;
 window.DEG2RAD = Math.PI / 180;
 
 // STORAGE ///////////////////////////////////////////////////////////