diff --git a/accounts/page/voucher_import_tool/voucher_import_tool.py b/accounts/page/voucher_import_tool/voucher_import_tool.py
index 2d7cd25..62cf7c6 100644
--- a/accounts/page/voucher_import_tool/voucher_import_tool.py
+++ b/accounts/page/voucher_import_tool/voucher_import_tool.py
@@ -233,7 +233,7 @@
 				start_row = i+2
 				
 				# check for empty columns
-				empty_columns = [i+1 for i, c in enumerate(rows[i+1]) if not c]
+				empty_columns = [j+1 for j, c in enumerate(rows[i+1]) if not c]
 				if empty_columns:
 					raise Exception, """Column No(s). %s %s empty. \
 						Please remove them and try again.""" % (comma_and(empty_columns),