diff --git a/lib/api/src/lib/stories.ts b/lib/api/src/lib/stories.ts
index 65667e5dee6..ea76e8af939 100644
--- a/lib/api/src/lib/stories.ts
+++ b/lib/api/src/lib/stories.ts
@@ -50,7 +50,7 @@ export interface Story {
   isRoot: false;
   isLeaf: true;
   parameters?: {
-    filename: string;
+    fileName: string;
     options: {
       hierarchyRootSeparator?: RegExp;
       hierarchySeparator?: RegExp;
@@ -69,7 +69,7 @@ export interface StoryInput {
   kind: string;
   children: string[];
   parameters: {
-    filename: string;
+    fileName: string;
     options: {
       hierarchyRootSeparator: RegExp;
       hierarchySeparator: RegExp;