diff --git a/lib/std/meta.zig b/lib/std/meta.zig
index 8f40d70fed..79b0424e96 100644
--- a/lib/std/meta.zig
+++ b/lib/std/meta.zig
@@ -854,6 +854,7 @@ pub fn ArgsTuple(comptime Function: type) type {
             .field_type = arg.arg_type.?,
             .default_value = @as(?(arg.arg_type.?), null),
             .is_comptime = false,
+            .alignment = @alignOf(arg.arg_type.?),
         };
     }