diff --git a/selflocalization/selflocalize.py b/selflocalization/selflocalize.py
index bedffe4..d60d14d 100644
--- a/selflocalization/selflocalize.py
+++ b/selflocalization/selflocalize.py
@@ -61,7 +61,7 @@ landmarks = {
 landmark_colors = [CRED, CGREEN] # Colors used when drawing the landmarks
 
 
-SIGMA = 1.5
+SIGMA = 3
 SIGMA_THETA = 0.3