diff --git a/5/advent_2.py b/5/advent_2.py
index 0726b24..a1cf842 100755
--- a/5/advent_2.py
+++ b/5/advent_2.py
@@ -81,7 +81,7 @@ def findmapping(sr, tables, prefix):
                 print(f"{prefix}Mapping {row} {sr} {len(tables)}")
                 allresults.append(
                     findmapping(
-                        SR(row.target + (sr.startpoint - row.source), sr.length),
+                        SR(row.target + (sr.startpoint - row.source),  row.endpoint - sr.startpoint),
                         tables,
                         prefix + "#",
                     )
@@ -98,7 +98,7 @@ def findmapping(sr, tables, prefix):
     return min(allresults)
 
 
-with open("data2.txt") as file:
+with open("data.txt") as file:
     lines = [line.rstrip() for line in file]
 
 tables = []