diff --git a/src/main.zig b/src/main.zig
index 7f8e3a0..a87c65e 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -18,9 +18,12 @@ const Vector2D = packed struct {
 
 // Functions
 
-fn add(a: *i32, b: i32) i32 {
+fn add(a: i32, b: i32) i32 {
+    return a + b;
+}
+
+fn setTo3(a: *i32) void {
     a.* = 3;
-    return a.* + b;
 }
 
 // Error unions
@@ -37,7 +40,7 @@ fn divide(a: f32, b: f32) !f32 {
     }
 }
 
-// Optional
+// Comptime generics
 
 fn Optional(comptime T: type) type {
     return struct {