diff --git a/script/local.py b/script/local.py
index 2a4c428..b23c823 100644
--- a/script/local.py
+++ b/script/local.py
@@ -37,7 +37,7 @@ def detect_pucks(ip):
     binary_fill_holes(aux)
     return analyse_particles(aux, 10000,50000,
             fill_holes = False, exclude_edges = True,print_table=True,
-            output_image = "outlines", minCirc = 0.0, maxCirc = 1.0)
+            output_image = "outlines", minCirc = 0.4, maxCirc = 1.0)
 
 def detect_samples(ip):        
     aux = grayscale(ip, in_place=False)