diff --git a/lib/src/flow_editor_page.dart b/lib/src/flow_editor_page.dart
index c3a316c..a80feaf 100644
--- a/lib/src/flow_editor_page.dart
+++ b/lib/src/flow_editor_page.dart
@@ -1308,7 +1308,7 @@ class _FileList extends StatelessWidget {
         if (snap.hasError) {
           return Padding(
             padding: const EdgeInsets.all(FaiSpace.md),
-            child: FaiErrorBox(error: snap.error, isError: true),
+            child: ChainErrorBox(error: snap.error, isError: true),
           );
         }
         final files = snap.data ?? <_FlowFile>[];
diff --git a/lib/src/widgets.dart b/lib/src/widgets.dart
index 6f6b33f..89bf739 100644
--- a/lib/src/widgets.dart
+++ b/lib/src/widgets.dart
@@ -1,4 +1,4 @@
-/// Minimal stand-ins for the FaiEmptyState + FaiErrorBox
+/// Minimal stand-ins for the FaiEmptyState + ChainErrorBox
 /// widgets Studio ships. The editor brings its own so the
 /// package compiles standalone — host-styled variants are
 /// a future plugin-API extension.
@@ -53,11 +53,11 @@ class FaiEmptyState extends StatelessWidget {
   }
 }
 
-class FaiErrorBox extends StatelessWidget {
+class ChainErrorBox extends StatelessWidget {
   final Object? error;
   final bool isError;
   final double? maxHeight;
-  const FaiErrorBox({
+  const ChainErrorBox({
     super.key,
     required this.error,
     this.isError = true,
diff --git a/lib/src/widgets/run_tab.dart b/lib/src/widgets/run_tab.dart
index 5fa692d..692276e 100644
--- a/lib/src/widgets/run_tab.dart
+++ b/lib/src/widgets/run_tab.dart
@@ -639,7 +639,7 @@ class _StepState {
 /// button cover both keyboard and trackpad operators — the
 /// implicit selection gesture is too easy to miss on a long
 /// failure message. Matches the visual treatment Studio's
-/// `FaiErrorBox` uses elsewhere; kept local to this package
+/// `ChainErrorBox` uses elsewhere; kept local to this package
 /// so flow_editor doesn't depend on Studio internals.
 class _CopyableErrorBox extends StatefulWidget {
   final String text;