diff --git a/vba_code_common.bas b/vba_code_common.bas
index 0d4685c..595359e 100644
--- a/vba_code_common.bas
+++ b/vba_code_common.bas
@@ -21,7 +21,7 @@ Function CleanCSVField(ByVal field As Variant) As String
     CleanCSVField = result
 End Function
 
-Function ValidateCSVColumnCount(ByRef lines As Variant, ByVal expectedColumns As Long) As Boolean
+Function ValidateCSVColumnCount(ByVal lines As Variant, ByVal expectedColumns As Long) As Boolean
     ValidateCSVColumnCount = True
     
     Dim lineNum As Long