diff --git a/18_functions.zig b/18_functions.zig
index 07c63ec..ad16a13 100644
--- a/18_functions.zig
+++ b/18_functions.zig
@@ -5,7 +5,7 @@ const std = @import("std");
 
 pub fn main() void {
     // The new function deepThought() should return the number 42. See below.
-    const answer = deepThought();
+    const answer: u8 = deepThought();
     
     std.debug.print("Answer to the Ultimate Question: {}\n", .{answer});
 }