diff --git a/example/program.nub b/example/program.nub
index 2a9d023..fd27633 100644
--- a/example/program.nub
+++ b/example/program.nub
@@ -4,8 +4,9 @@ struct Human {
     age: i8;
 }
 
-global func main() {
-    printf("%d\n", addbyte(10, 300));
+global func main(argc: i64, argv: i64) {
+    printf("args: %d, starts at %p\n", argc, argv);
+    printf("10 + 300 = %d\n", addbyte(10, 300));
 }
 
 func addbyte(a: i32, sb: i8): i32 {
diff --git a/src/compiler/Nub.Lang/Backend/Generator.cs b/src/compiler/Nub.Lang/Backend/Generator.cs
index 0604fac..3c83b4e 100644
--- a/src/compiler/Nub.Lang/Backend/Generator.cs
+++ b/src/compiler/Nub.Lang/Backend/Generator.cs
@@ -184,12 +184,14 @@ public class Generator
                         return 8;
                     case PrimitiveTypeKind.I32:
                     case PrimitiveTypeKind.U32:
+                        return 4;
                     case PrimitiveTypeKind.I16:
                     case PrimitiveTypeKind.U16:
+                        return 2;
                     case PrimitiveTypeKind.I8:
                     case PrimitiveTypeKind.U8:
                     case PrimitiveTypeKind.Bool:
-                        return 4;
+                        return 1;
                     case PrimitiveTypeKind.F64:
                         return 8;
                     case PrimitiveTypeKind.F32: