diff --git a/src/main/java/com/kamco/cd/kamcoback/model/dto/ModelMngDto.java b/src/main/java/com/kamco/cd/kamcoback/model/dto/ModelMngDto.java
index 63ddada6..bad925f3 100644
--- a/src/main/java/com/kamco/cd/kamcoback/model/dto/ModelMngDto.java
+++ b/src/main/java/com/kamco/cd/kamcoback/model/dto/ModelMngDto.java
@@ -230,9 +230,9 @@ public class ModelMngDto {
     private int chunkTotalIndex;
 
     public double getUploadRate() {
-      //      if (this.chunkTotalIndex == 0) {
-      //        return 0.0;
-      //      }
+      if (chunkIndex < 0 || chunkTotalIndex < 0) {
+        return 0.0;
+      }
       return (double) (this.chunkIndex + 1) / (this.chunkTotalIndex + 1) * 100.0;
     }
   }