diff --git a/Tranga/Chapter.cs b/Tranga/Chapter.cs
index 8d734c2..17c21f5 100644
--- a/Tranga/Chapter.cs
+++ b/Tranga/Chapter.cs
@@ -25,7 +25,7 @@ public struct Chapter
         {
             NumberDecimalSeparator = "."
         };
-        decimal orderNumber = Math.Floor(Convert.ToDecimal(volumeNumber) * Convert.ToDecimal(chapterNumber, nfi));
-        this.fileName = $"{chapterName} - V{volumeNumber}C{chapterNumber} - {orderNumber.ToString(nfi)}";
+        decimal orderNumber = Convert.ToDecimal(volumeNumber) * Convert.ToDecimal(chapterNumber, nfi);
+        this.fileName = $"{chapterName} - V{volumeNumber}C{chapterNumber} - {decimal.Round(orderNumber, 1).ToString(nfi)}";
     }
 }
\ No newline at end of file