diff --git a/src/target.ts b/src/target.ts
index 7d923d6..004b6c3 100644
--- a/src/target.ts
+++ b/src/target.ts
@@ -54,7 +54,7 @@ export class Target {
 
   public async export() {
     this.exportedRows = 0;
-    this.days = Math.round((this.to - this.from) / MS_IN_DAY);
+    this.days = Math.ceil((this.to - this.from) / MS_IN_DAY);
     this.day = 0;
     this.initCsvStream();