diff --git a/src/main/java/com/nhn/pinpoint/web/service/RecordSetServiceImpl.java b/src/main/java/com/nhn/pinpoint/web/service/RecordSetServiceImpl.java
index 5bcb75ccf..599a0c31f 100644
--- a/src/main/java/com/nhn/pinpoint/web/service/RecordSetServiceImpl.java
+++ b/src/main/java/com/nhn/pinpoint/web/service/RecordSetServiceImpl.java
@@ -131,7 +131,7 @@ public class RecordSetServiceImpl implements RecordSetService {
         private final Logger logger = LoggerFactory.getLogger(this.getClass());
 
         private final ApiDescriptionParser apiDescriptionParser = new ApiDescriptionParser();
-        private int idGen = 0;
+        private int idGen = 1;
         private final Stack<SpanDepth> stack = new Stack<SpanDepth>();
 
         private int getNextId() {