diff --git a/serde_valid/src/validation/custom.rs b/serde_valid/src/validation/custom.rs
index 16aa25a..7c2b278 100644
--- a/serde_valid/src/validation/custom.rs
+++ b/serde_valid/src/validation/custom.rs
@@ -47,23 +47,21 @@ mod test {
         }
 
         assert!(wrap_closure_validation(&1i32, single_error).is_ok());
+        assert!(wrap_closure_validation(&0i32, single_error).is_err());
+        assert!(wrap_closure_validation(&-1i32, single_error).is_err());
     }
 
     #[test]
     fn test_custom_fn_multiple_errors() {
         fn multiple_errors(data: &i32) -> Result<(), Vec<crate::validation::Error>> {
             let mut errors = Vec::new();
-            if *data > 0 {
-                return Ok(());
-            } else {
+            if *data < 1 {
                 errors.push(crate::validation::Error::Custom(
                     "Value must be greater than 0".to_string(),
                 ));
             }
 
-            if *data < 10 {
-                return Ok(());
-            } else {
+            if *data >= 10 {
                 errors.push(crate::validation::Error::Custom(
                     "Value must be less than 10".to_string(),
                 ));
@@ -77,5 +75,9 @@ mod test {
         }
 
         assert!(wrap_closure_validation(&1i32, multiple_errors).is_ok());
+        assert!(wrap_closure_validation(&10i32, multiple_errors).is_err());
+        assert!(wrap_closure_validation(&11i32, multiple_errors).is_err());
+        assert!(wrap_closure_validation(&0i32, multiple_errors).is_err());
+        assert!(wrap_closure_validation(&-1i32, multiple_errors).is_err());
     }
 }