diff --git a/core/codegen/tests/ui-fail-nightly/from_form.stderr b/core/codegen/tests/ui-fail-nightly/from_form.stderr
index bfbd2450..7bca8ba9 100644
--- a/core/codegen/tests/ui-fail-nightly/from_form.stderr
+++ b/core/codegen/tests/ui-fail-nightly/from_form.stderr
@@ -477,11 +477,11 @@ note: function defined here
     | pub fn ext<'v>(file: &TempFile<'_>, r#type: ContentType) -> Result<'v, ()> {
     |        ^^^
 
-error[E0277]: the trait bound `i32: From<&str>` is not satisfied
+error[E0277]: the trait bound `usize: From<&str>` is not satisfied
    --> tests/ui-fail-nightly/from_form.rs:171:23
     |
 171 |     #[field(default = "no conversion")]
-    |                       ^^^^^^^^^^^^^^^ the trait `From<&str>` is not implemented for `i32`
+    |                       ^^^^^^^^^^^^^^^ the trait `From<&str>` is not implemented for `usize`
     |
     = help: the following other types implement trait `From<T>`:
               <f32 as From<i16>>
@@ -493,7 +493,7 @@ error[E0277]: the trait bound `i32: From<&str>` is not satisfied
               <f64 as From<i32>>
               <f64 as From<i8>>
             and 85 others
-    = note: required because of the requirements on the impl of `Into<i32>` for `&str`
+    = note: required because of the requirements on the impl of `Into<usize>` for `&str`
 
 error[E0308]: mismatched types
    --> tests/ui-fail-nightly/from_form.rs:203:33
diff --git a/core/codegen/tests/ui-fail-stable/from_form.stderr b/core/codegen/tests/ui-fail-stable/from_form.stderr
index f94e4bc2..bedacccb 100644
--- a/core/codegen/tests/ui-fail-stable/from_form.stderr
+++ b/core/codegen/tests/ui-fail-stable/from_form.stderr
@@ -501,19 +501,19 @@ error[E0308]: mismatched types
 165 |     #[field(validate = ext("hello"))]
     |                            ^^^^^^^ expected struct `ContentType`, found `&str`
 
-error[E0277]: the trait bound `i32: From<&str>` is not satisfied
+error[E0277]: the trait bound `usize: From<&str>` is not satisfied
    --> tests/ui-fail-stable/from_form.rs:171:23
     |
 171 |     #[field(default = "no conversion")]
-    |                       ^^^^^^^^^^^^^^^ the trait `From<&str>` is not implemented for `i32`
+    |                       ^^^^^^^^^^^^^^^ the trait `From<&str>` is not implemented for `usize`
     |
     = help: the following implementations were found:
-              <i32 as From<NonZeroI32>>
-              <i32 as From<SignalKind>>
-              <i32 as From<bool>>
-              <i32 as From<i16>>
+              <usize as From<NonZeroUsize>>
+              <usize as From<bool>>
+              <usize as From<mio::token::Token>>
+              <usize as From<runtime::thread_pool::idle::State>>
             and 89 others
-    = note: required because of the requirements on the impl of `Into<i32>` for `&str`
+    = note: required because of the requirements on the impl of `Into<usize>` for `&str`
 
 error[E0308]: mismatched types
    --> tests/ui-fail-stable/from_form.rs:203:33
diff --git a/core/codegen/tests/ui-fail/from_form.rs b/core/codegen/tests/ui-fail/from_form.rs
index 2389f3c6..60a06158 100644
--- a/core/codegen/tests/ui-fail/from_form.rs
+++ b/core/codegen/tests/ui-fail/from_form.rs
@@ -169,7 +169,7 @@ struct Validate3 {
 #[derive(FromForm)]
 struct Default0 {
     #[field(default = "no conversion")]
-    first: i32,
+    first: usize,
 }
 
 #[derive(FromForm)]