diff --git a/day03.py b/day03.py
index 32c4fb8..725b990 100644
--- a/day03.py
+++ b/day03.py
@@ -26,7 +26,7 @@ class Day(AOCDay):
     def part1(self) -> Any:
         es = 0
         for line in self.getInput():
-            es += get_prio(line[:len(line)//2].intersection(line[len(line)//2:]))
+            es += get_prio(line[:len(line)//2] & line[len(line)//2:])
 
         return es
 
@@ -34,7 +34,7 @@ class Day(AOCDay):
         rucksacks = self.getInput()
         es = 0
         for g in range(len(rucksacks) // 3):
-            es += get_prio(rucksacks[g*3].intersection(rucksacks[g*3+1], rucksacks[g*3+2]))
+            es += get_prio(rucksacks[g*3] & rucksacks[g*3+1] & rucksacks[g*3+2])
 
         return es