diff --git a/Tools/python/split_layers.py b/Tools/python/split_layers.py
index 401f1e94017ad559a888f82e4c4ff4fe8fb56d2f..48c7a4e7b196886685a8af6e420af796af366259 100755
--- a/Tools/python/split_layers.py
+++ b/Tools/python/split_layers.py
@@ -8,25 +8,25 @@ orig_box_width=10.
 orig_box_spacing=10.
 
 layer_mapping = {
-	'via1' : [16],
-	'via2' : [18],
-	'contact' : [14],
-	'metal1' : [15],
-	'metal2' : [17],
-	'metal3' : [19],
+	'pwell' : [2],
+	'nwell' : [3],
+	'pbase' : [4],
+	'nbase' : [5],
 	'sti' : [6],
 	'fox' : [7],
 	'sonos' : [8],
 	'gate' : [9],
+	'implant_stop' : [10],
 	'nimplant' : [11],
 	'pimplant' : [12],
-	'glass' : [20],
-	'pbase' : [4],
-	'nbase' : [5],
-	'pwell' : [2],
-	'nwell' : [3],
 	'silicide_block' : [13],
-	'implant_stop' : [10],
+	'contact' : [14],
+	'metal1' : [15],
+	'via1' : [16],
+	'metal2' : [17],
+	'via2' : [18],
+	'metal3' : [19],
+	'glass' : [20],
 }
 
 def get_gds_magic_script(layout_path,cellname):