1 files changed, 3 insertions, 2 deletions
diff --git a/exercises/046_optionals2.zig b/exercises/046_optionals2.zig
index b5fffbb..a158389 100644
--- a/exercises/046_optionals2.zig
+++ b/exercises/046_optionals2.zig
@@ -22,7 +22,7 @@ const std = @import("std");
 
 const Elephant = struct {
     letter: u8,
-    tail: *Elephant = null, // Hmm... tail needs something...
+    tail: ?*Elephant = null, // Hmm... tail needs something...
     visited: bool = false,
 };
 
@@ -34,6 +34,7 @@ pub fn main() void {
     // Link the elephants so that each tail "points" to the next.
     linkElephants(&elephantA, &elephantB);
     linkElephants(&elephantB, &elephantC);
+    linkElephants(&elephantC, &elephantA);
 
     // `linkElephants` will stop the program if you try and link an
     // elephant that doesn't exist! Uncomment and see what happens.
@@ -66,6 +67,6 @@ fn visitElephants(first_elephant: *Elephant) void {
 
         // HINT: We want something similar to what `.?` does,
         // but instead of ending the program, we want to exit the loop...
-        e = e.tail ???
+        e = e.tail orelse break;
     }
 }