1diff --git a/tests/ui/cast_size.r32bit.stderr b/tests/ui/cast_size.r32bit.stderr
2index 5de19f5775..2f7eeda385 100644
3--- a/tests/ui/cast_size.r32bit.stderr
4+++ b/tests/ui/cast_size.r32bit.stderr
5@@ -28,13 +28,13 @@
6 LL | x1 as f32;
7 | ^^^^^^^^^
8
9-error: casting `isize` to `f64` may cause a loss of precision on targets with 64-bit wide pointers (`isize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
10+error: casting `isize` to `f64` may cause a loss of precision (`isize` can be up to 64 bits wide depending on the target architecture, but `f64`'s mantissa is only 52 bits wide)
11 --> tests/ui/cast_size.rs:28:5
12 |
13 LL | x0 as f64;
14 | ^^^^^^^^^
15
16-error: casting `usize` to `f64` may cause a loss of precision on targets with 64-bit wide pointers (`usize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
17+error: casting `usize` to `f64` may cause a loss of precision (`usize` can be up to 64 bits wide depending on the target architecture, but `f64`'s mantissa is only 52 bits wide)
18 --> tests/ui/cast_size.rs:30:5
19 |
20 LL | x1 as f64;
21@@ -171,7 +171,7 @@
22 LL | 999_999_999 as f32;
23 | ^^^^^^^^^^^^^^^^^^
24
25-error: casting `usize` to `f64` may cause a loss of precision on targets with 64-bit wide pointers (`usize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
26+error: casting `usize` to `f64` may cause a loss of precision (`usize` can be up to 64 bits wide depending on the target architecture, but `f64`'s mantissa is only 52 bits wide)
27 --> tests/ui/cast_size.rs:63:5
28 |
29 LL | 9_999_999_999_999_999usize as f64;