diff --git a/packages/core/src/di/injector_compatibility.ts b/packages/core/src/di/injector_compatibility.ts
index 78a30ae32f..3eb5b47c3e 100644
--- a/packages/core/src/di/injector_compatibility.ts
+++ b/packages/core/src/di/injector_compatibility.ts
@@ -19,7 +19,9 @@ import {Inject, Optional, Self, SkipSelf} from './metadata';
  *
  * @publicApi
  */
-export const enum InjectFlags {
+export enum InjectFlags {
+  // TODO(alxhub): make this 'const' when ngc no longer writes exports of it into ngfactory files.
+
   Default = 0b0000,
 
   /**
diff --git a/packages/core/test/bundling/animation_world/bundle.golden_symbols.json b/packages/core/test/bundling/animation_world/bundle.golden_symbols.json
index 8007265b47..1d2048935c 100644
--- a/packages/core/test/bundling/animation_world/bundle.golden_symbols.json
+++ b/packages/core/test/bundling/animation_world/bundle.golden_symbols.json
@@ -86,6 +86,9 @@
   {
     "name": "INJECTOR_SIZE"
   },
+  {
+    "name": "InjectFlags"
+  },
   {
     "name": "IterableChangeRecord_"
   },
diff --git a/packages/core/test/bundling/hello_world_r2/bundle.golden_symbols.json b/packages/core/test/bundling/hello_world_r2/bundle.golden_symbols.json
index 84bb286881..235a7d6bf6 100644
--- a/packages/core/test/bundling/hello_world_r2/bundle.golden_symbols.json
+++ b/packages/core/test/bundling/hello_world_r2/bundle.golden_symbols.json
@@ -176,6 +176,9 @@
   {
     "name": "Inject"
   },
+  {
+    "name": "InjectFlags"
+  },
   {
     "name": "InjectionToken"
   },
diff --git a/packages/core/test/bundling/injection/bundle.golden_symbols.json b/packages/core/test/bundling/injection/bundle.golden_symbols.json
index c9d8c5f334..48f070ca93 100644
--- a/packages/core/test/bundling/injection/bundle.golden_symbols.json
+++ b/packages/core/test/bundling/injection/bundle.golden_symbols.json
@@ -17,6 +17,9 @@
   {
     "name": "Inject"
   },
+  {
+    "name": "InjectFlags"
+  },
   {
     "name": "InjectionToken"
   },
diff --git a/packages/core/test/bundling/todo/bundle.golden_symbols.json b/packages/core/test/bundling/todo/bundle.golden_symbols.json
index 427f0c9959..98817f6924 100644
--- a/packages/core/test/bundling/todo/bundle.golden_symbols.json
+++ b/packages/core/test/bundling/todo/bundle.golden_symbols.json
@@ -74,6 +74,9 @@
   {
     "name": "INJECTOR_SIZE"
   },
+  {
+    "name": "InjectFlags"
+  },
   {
     "name": "IterableChangeRecord_"
   },
diff --git a/packages/core/test/bundling/todo_r2/bundle.golden_symbols.json b/packages/core/test/bundling/todo_r2/bundle.golden_symbols.json
index 6e0a529556..88eba8185f 100644
--- a/packages/core/test/bundling/todo_r2/bundle.golden_symbols.json
+++ b/packages/core/test/bundling/todo_r2/bundle.golden_symbols.json
@@ -371,6 +371,9 @@
   {
     "name": "Inject"
   },
+  {
+    "name": "InjectFlags"
+  },
   {
     "name": "InjectionToken"
   },
diff --git a/tools/public_api_guard/core/core.d.ts b/tools/public_api_guard/core/core.d.ts
index 2b0c1cb026..2d34bab8e5 100644
--- a/tools/public_api_guard/core/core.d.ts
+++ b/tools/public_api_guard/core/core.d.ts
@@ -347,7 +347,7 @@ export interface InjectDecorator {
     new (token: any): Inject;
 }
 
-export declare const enum InjectFlags {
+export declare enum InjectFlags {
     Default = 0,
     Host = 1,
     Self = 2,