diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractNamedValueArgumentResolver.java b/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractNamedValueArgumentResolver.java
index 79565cce4f14..969188086e54 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractNamedValueArgumentResolver.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractNamedValueArgumentResolver.java
@@ -205,23 +205,18 @@ private Object applyConversion(@Nullable Object value, NamedValueInfo namedValue
 	 */
 	private Mono<Object> getDefaultValue(NamedValueInfo namedValueInfo, MethodParameter parameter,
 			BindingContext bindingContext, Model model, ServerWebExchange exchange) {
-
-		Object value = null;
-		try {
+		return Mono.fromSupplier(() -> {
+			Object value = null;
 			if (namedValueInfo.defaultValue != null) {
 				value = resolveStringValue(namedValueInfo.defaultValue);
-			}
-			else if (namedValueInfo.required && !parameter.isOptional()) {
+			} else if (namedValueInfo.required && !parameter.isOptional()) {
 				handleMissingValue(namedValueInfo.name, parameter, exchange);
 			}
 			value = handleNullValue(namedValueInfo.name, value, parameter.getNestedParameterType());
 			value = applyConversion(value, namedValueInfo, parameter, bindingContext, exchange);
 			handleResolvedValue(value, namedValueInfo.name, parameter, model, exchange);
-			return Mono.justOrEmpty(value);
-		}
-		catch (Throwable ex) {
-			return Mono.error(ex);
-		}
+			return value;
+		});
 	}
 
 	/**