diff --git a/.changeset/remove-page-blueprint-defaultpath.md b/.changeset/remove-page-blueprint-defaultpath.md
new file mode 100644
index 0000000000..848039a939
--- /dev/null
+++ b/.changeset/remove-page-blueprint-defaultpath.md
@@ -0,0 +1,5 @@
+---
+'@backstage/frontend-plugin-api': patch
+---
+
+Removed the deprecated `defaultPath` migration helper from `PageBlueprint` params.
diff --git a/packages/app-example-plugin/report.api.md b/packages/app-example-plugin/report.api.md
index 70b3446a2b..432174da68 100644
--- a/packages/app-example-plugin/report.api.md
+++ b/packages/app-example-plugin/report.api.md
@@ -87,7 +87,6 @@ const examplePlugin: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/packages/frontend-plugin-api/report.api.md b/packages/frontend-plugin-api/report.api.md
index c83511fc47..63d7297825 100644
--- a/packages/frontend-plugin-api/report.api.md
+++ b/packages/frontend-plugin-api/report.api.md
@@ -1722,7 +1722,6 @@ export interface OverridableFrontendPlugin<
 export const PageBlueprint: ExtensionBlueprint_2<{
   kind: 'page';
   params: {
-    defaultPath?: [Error: `Use the 'path' param instead`];
     path: string;
     title?: string;
     icon?: IconElement;
diff --git a/packages/frontend-plugin-api/src/blueprints/PageBlueprint.tsx b/packages/frontend-plugin-api/src/blueprints/PageBlueprint.tsx
index e439d177e2..18c1af0163 100644
--- a/packages/frontend-plugin-api/src/blueprints/PageBlueprint.tsx
+++ b/packages/frontend-plugin-api/src/blueprints/PageBlueprint.tsx
@@ -59,10 +59,6 @@ export const PageBlueprint = createExtensionBlueprint({
   },
   *factory(
     params: {
-      /**
-       * @deprecated Use the `path` param instead.
-       */
-      defaultPath?: [Error: `Use the 'path' param instead`];
       path: string;
       title?: string;
       icon?: IconElement;
diff --git a/plugins/api-docs/report-alpha.api.md b/plugins/api-docs/report-alpha.api.md
index de6388ed2b..0ee7ac5460 100644
--- a/plugins/api-docs/report-alpha.api.md
+++ b/plugins/api-docs/report-alpha.api.md
@@ -563,7 +563,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/app-visualizer/report.api.md b/plugins/app-visualizer/report.api.md
index e0e3f26dd2..9ee06eccb0 100644
--- a/plugins/app-visualizer/report.api.md
+++ b/plugins/app-visualizer/report.api.md
@@ -109,7 +109,6 @@ const visualizerPlugin: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/auth/report.api.md b/plugins/auth/report.api.md
index a281d265dc..8e8ac71d31 100644
--- a/plugins/auth/report.api.md
+++ b/plugins/auth/report.api.md
@@ -88,7 +88,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/catalog-graph/report-alpha.api.md b/plugins/catalog-graph/report-alpha.api.md
index f11aa9a21b..f9d4542625 100644
--- a/plugins/catalog-graph/report-alpha.api.md
+++ b/plugins/catalog-graph/report-alpha.api.md
@@ -238,7 +238,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/catalog-import/report-alpha.api.md b/plugins/catalog-import/report-alpha.api.md
index ba841a7f70..b58b641050 100644
--- a/plugins/catalog-import/report-alpha.api.md
+++ b/plugins/catalog-import/report-alpha.api.md
@@ -181,7 +181,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/catalog-unprocessed-entities/report-alpha.api.md b/plugins/catalog-unprocessed-entities/report-alpha.api.md
index 30b115f07e..7408831f87 100644
--- a/plugins/catalog-unprocessed-entities/report-alpha.api.md
+++ b/plugins/catalog-unprocessed-entities/report-alpha.api.md
@@ -130,7 +130,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/catalog/report-alpha.api.md b/plugins/catalog/report-alpha.api.md
index fbe90f461c..a0b092a453 100644
--- a/plugins/catalog/report-alpha.api.md
+++ b/plugins/catalog/report-alpha.api.md
@@ -1082,7 +1082,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
@@ -1270,7 +1269,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: 'entity';
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/devtools/report-alpha.api.md b/plugins/devtools/report-alpha.api.md
index 6c3cfab581..753875eaaa 100644
--- a/plugins/devtools/report-alpha.api.md
+++ b/plugins/devtools/report-alpha.api.md
@@ -146,7 +146,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/home/report-alpha.api.md b/plugins/home/report-alpha.api.md
index 48f7853cd7..0269f471fe 100644
--- a/plugins/home/report-alpha.api.md
+++ b/plugins/home/report-alpha.api.md
@@ -194,7 +194,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/kubernetes/report-alpha.api.md b/plugins/kubernetes/report-alpha.api.md
index 86b824b2f4..7086976724 100644
--- a/plugins/kubernetes/report-alpha.api.md
+++ b/plugins/kubernetes/report-alpha.api.md
@@ -228,7 +228,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/mui-to-bui/report.api.md b/plugins/mui-to-bui/report.api.md
index 302804d432..f4bf566c9e 100644
--- a/plugins/mui-to-bui/report.api.md
+++ b/plugins/mui-to-bui/report.api.md
@@ -102,7 +102,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/notifications/report-alpha.api.md b/plugins/notifications/report-alpha.api.md
index 7ec24ef81e..e1feed0cde 100644
--- a/plugins/notifications/report-alpha.api.md
+++ b/plugins/notifications/report-alpha.api.md
@@ -108,7 +108,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/scaffolder/report-alpha.api.md b/plugins/scaffolder/report-alpha.api.md
index 9baa74407f..e634153b87 100644
--- a/plugins/scaffolder/report-alpha.api.md
+++ b/plugins/scaffolder/report-alpha.api.md
@@ -274,7 +274,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/search/report-alpha.api.md b/plugins/search/report-alpha.api.md
index 98a47d6b1e..e3f2d6108a 100644
--- a/plugins/search/report-alpha.api.md
+++ b/plugins/search/report-alpha.api.md
@@ -181,7 +181,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
@@ -351,7 +350,6 @@ export const searchPage: OverridableExtensionDefinition<{
   kind: 'page';
   name: undefined;
   params: {
-    defaultPath?: [Error: `Use the 'path' param instead`];
     path: string;
     title?: string;
     icon?: IconElement;
diff --git a/plugins/techdocs/report-alpha.api.md b/plugins/techdocs/report-alpha.api.md
index 5cf7b4fd7a..aa14098288 100644
--- a/plugins/techdocs/report-alpha.api.md
+++ b/plugins/techdocs/report-alpha.api.md
@@ -348,7 +348,6 @@ const _default: OverridableFrontendPlugin<
         >;
       };
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
@@ -441,7 +440,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: 'reader';
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;
diff --git a/plugins/user-settings/report-alpha.api.md b/plugins/user-settings/report-alpha.api.md
index 11ffee9229..c99709d777 100644
--- a/plugins/user-settings/report-alpha.api.md
+++ b/plugins/user-settings/report-alpha.api.md
@@ -120,7 +120,6 @@ const _default: OverridableFrontendPlugin<
       kind: 'page';
       name: undefined;
       params: {
-        defaultPath?: [Error: `Use the 'path' param instead`];
         path: string;
         title?: string;
         icon?: IconElement;