diff --git a/lib/std/Io.zig b/lib/std/Io.zig
index ba20eccc4e..f1e91c5341 100644
--- a/lib/std/Io.zig
+++ b/lib/std/Io.zig
@@ -874,7 +874,7 @@ pub const Clock = enum {
             if (t.clock == clock) return t;
             const now_old = t.clock.now(io);
             const now_new = clock.now(io);
-            const duration = now_old.durationTo(t);
+            const duration = now_old.durationTo(t.raw);
             return .{
                 .clock = clock,
                 .raw = now_new.addDuration(duration),