diff --git a/mapfile/template.j2 b/mapfile/template.j2
index 1181313eb7c59619e14128da232eef64617a8c62..e1ec82c18abfc23b635a0e3a2024bd463f0ce0be 100644
--- a/mapfile/template.j2
+++ b/mapfile/template.j2
@@ -140,14 +140,14 @@ LAYER
   
     CLASS
       NAME "Low infection risk"
-      EXPRESSION ([pixel] >= 0 AND [pixel] < 15) 
+      EXPRESSION ([pixel] >= 0 AND [pixel] < 3) 
       STYLE
           COLOR 58 196 125 # Green
       END
     END
     CLASS
       NAME "High infection risk"
-      EXPRESSION ([pixel] >= 15) 
+      EXPRESSION ([pixel] >= 3) 
       STYLE
           COLOR 217 37 80 # Red
       END