diff --git a/examples/cls/v20201016/cls_kv.proto b/examples/cls/v20201016/cls_kv.proto
index 04ae7bf0a..25ba9e3d3 100644
--- a/examples/cls/v20201016/cls_kv.proto
+++ b/examples/cls/v20201016/cls_kv.proto
@@ -16,7 +16,7 @@ message Log
 message LogTag
 {
     required string key       = 1;
-	required string value     = 2;
+    required string value     = 2;
 }
 
 message LogGroup
@@ -25,7 +25,7 @@ message LogGroup
     optional string contextFlow= 2;
     optional string filename = 3;
     optional string source = 4;
-	repeated LogTag logTags = 5;
+    repeated LogTag logTags = 5;
 }
 
 message LogGroupList