diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 7d7cb1e..a04e0f5 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -8173,6 +8173,10 @@
 
   @override
   String get defaultValueCode {
+    if (linkedNode != null) {
+      return linkedContext.getDefaultValueCode(linkedNode);
+    }
+
     if (unlinkedParam != null) {
       if (unlinkedParam.initializer?.bodyExpr == null) {
         return null;
diff --git a/pkg/analyzer/lib/src/summary2/linked_unit_context.dart b/pkg/analyzer/lib/src/summary2/linked_unit_context.dart
index b32ee0c..ee083b1 100644
--- a/pkg/analyzer/lib/src/summary2/linked_unit_context.dart
+++ b/pkg/analyzer/lib/src/summary2/linked_unit_context.dart
@@ -227,6 +227,14 @@
     return LazyTypeParameter.getDefaultType(_astReader, node);
   }
 
+  String getDefaultValueCode(AstNode node) {
+    if (node is DefaultFormalParameter) {
+      LazyFormalParameter.readDefaultValue(_astReader, node);
+      return node.defaultValue?.toString();
+    }
+    return null;
+  }
+
   int getDirectiveOffset(AstNode node) {
     LazyDirective.readMetadata(_astReader, node);
     return node.offset;
diff --git a/pkg/analyzer/lib/src/summary2/linking_bundle_context.dart b/pkg/analyzer/lib/src/summary2/linking_bundle_context.dart
index 75e6617..fd4148c 100644
--- a/pkg/analyzer/lib/src/summary2/linking_bundle_context.dart
+++ b/pkg/analyzer/lib/src/summary2/linking_bundle_context.dart
@@ -130,7 +130,7 @@
     } else if (p.isOptionalPositional) {
       return LinkedNodeFormalParameterKind.optionalPositional;
     } else if (p.isOptionalNamed) {
-      return LinkedNodeFormalParameterKind.requiredNamed;
+      return LinkedNodeFormalParameterKind.optionalNamed;
     } else {
       throw StateError('Unexpected parameter kind: $p');
     }