diff --git a/examples/custom_error/src/main.rs b/examples/custom_error/src/main.rs
index da07ee8..7884d37 100644
--- a/examples/custom_error/src/main.rs
+++ b/examples/custom_error/src/main.rs
@@ -2,7 +2,7 @@ use nutype::nutype;
 use thiserror::Error;
 
 #[nutype(
-    validate(with = validate_positive_odd, error = PositivelyOddError),
+    validate(with = validate_positively_odd, error = PositivelyOddError),
     derive(Debug, FromStr),
 )]
 struct PositivelyOdd(i32);
@@ -16,7 +16,7 @@ enum PositivelyOddError {
     Even,
 }
 
-fn validate_positive_odd(value: &i32) -> Result<(), PositivelyOddError> {
+fn validate_positively_odd(value: &i32) -> Result<(), PositivelyOddError> {
     if *value < 0 {
         return Err(PositivelyOddError::Negative);
     }
diff --git a/test_suite/tests/integer.rs b/test_suite/tests/integer.rs
index 4fb60d4..eea1c59 100644
--- a/test_suite/tests/integer.rs
+++ b/test_suite/tests/integer.rs
@@ -838,7 +838,7 @@ mod custom_error {
     use thiserror::Error;
 
     #[nutype(
-        validate(with = validate_positive_odd, error = PositivelyOddError),
+        validate(with = validate_positively_odd, error = PositivelyOddError),
         derive(Debug, FromStr),
     )]
     struct PositivelyOdd(i32);
@@ -852,7 +852,7 @@ mod custom_error {
         Even,
     }
 
-    fn validate_positive_odd(value: &i32) -> Result<(), PositivelyOddError> {
+    fn validate_positively_odd(value: &i32) -> Result<(), PositivelyOddError> {
         if *value < 0 {
             return Err(PositivelyOddError::Negative);
         }
@@ -876,14 +876,6 @@ mod custom_error {
             assert_eq!(err, PositivelyOddError::Even);
         }
 
-        {
-            let err: PositivelyOddParseError = "-3".parse::<PositivelyOdd>().unwrap_err();
-            assert!(matches!(
-                err,
-                PositivelyOddParseError::Validate(PositivelyOddError::Negative)
-            ));
-        }
-
         let podd: PositivelyOdd = PositivelyOdd::try_new(3).unwrap();
         assert_eq!(podd.into_inner(), 3);
     }