diff --git a/src/dev/generate_release_note.ts b/src/dev/generate_release_note.ts
index 0d0d7b06f945..b002711f151e 100644
--- a/src/dev/generate_release_note.ts
+++ b/src/dev/generate_release_note.ts
@@ -29,9 +29,7 @@ function addContentAfterUnreleased(path: string, newContent: string): void {
         newContent +
         fileContent.slice(endOfLineIndex + 1);
     } else {
-      // eslint-disable-next-line no-console
-      console.warn('End of line for "Unreleased" section not found.');
-      return;
+      throw new Error('End of line for "Unreleased" section not found.');
     }
   } else {
     throw new Error("'## [Unreleased]' not found in the file.");