1 files changed, 1 insertions, 1 deletions
diff --git a/4/part1.c b/4/part1.c
index 65c3b99..b4a3b8e 100644
--- a/4/part1.c
+++ b/4/part1.c
@@ -64,5 +64,5 @@ int count_valid_passports(const char *filename)
 
 int main(int argc, char *argv[])
 {
-    printf("%i", count_valid_passports(argv[1]));
+    printf("%i", count_valid_passports(argv[argc - 1]));
 }