diff --git a/src/FieldsArray.ts b/src/FieldsArray.ts
index 10fad77..f02df0f 100644
--- a/src/FieldsArray.ts
+++ b/src/FieldsArray.ts
@@ -89,7 +89,7 @@ function registerWithValidation(
 			instance[sharedKeysPoolSymbol].add(field.key);
 			validItems.push(field);
 		} catch (err) {
-			console.warn(err);
+			console.warn(err.message ? err.message : err);
 		}
 	}