diff --git a/src/core/public/fatal_errors/fatal_errors_service.tsx b/src/core/public/fatal_errors/fatal_errors_service.tsx
index e263c8012f47..d890ace5b5bb 100644
--- a/src/core/public/fatal_errors/fatal_errors_service.tsx
+++ b/src/core/public/fatal_errors/fatal_errors_service.tsx
@@ -78,7 +78,7 @@ export class FatalErrorsService {
       });
   }
 
-  public add: FatalErrorsSetup['add'] = (error, source?) => {
+  private add: FatalErrorsSetup['add'] = (error, source?) => {
     const errorInfo = getErrorInfo(error, source);
 
     this.errorInfo$.next(errorInfo);