diff --git a/vba_code_kukan_detail_master.txt b/vba_code_kukan_detail_master.txt
index 2daa033..758d2c5 100644
--- a/vba_code_kukan_detail_master.txt
+++ b/vba_code_kukan_detail_master.txt
@@ -306,8 +306,8 @@ Sub validateDetailData(ByVal ws As Worksheet, ByVal rowNum As Long)
         Exit Sub
     End If
     
-    If Trim(ws.Cells(rowNum, 9).Value) = "" Or Not IsNumeric(ws.Cells(rowNum, 9).Value) Then
-        ws.Cells(rowNum, 17).Value = "I column is required and must be numeric"
+    If Trim(ws.Cells(rowNum, 9).Value) = "" Then
+        ws.Cells(rowNum, 17).Value = "I column is required"
         Exit Sub
     End If