diff --git a/tools/package-tools/build-package.ts b/tools/package-tools/build-package.ts
index a75402664be..4d99493704c 100644
--- a/tools/package-tools/build-package.ts
+++ b/tools/package-tools/build-package.ts
@@ -107,6 +107,7 @@ export class BuildPackage {
     return ngcCompile(['-p', entryPointTsconfigPath]).catch(() => {
       const error = red(`Failed to compile ${secondaryEntryPoint} using ${entryPointTsconfigPath}`);
       console.error(error);
+      return Promise.reject(error);
     });
   }
 
diff --git a/tools/package-tools/compile-entry-point.ts b/tools/package-tools/compile-entry-point.ts
index 0676eeb1745..96eb287ff8b 100644
--- a/tools/package-tools/compile-entry-point.ts
+++ b/tools/package-tools/compile-entry-point.ts
@@ -22,6 +22,7 @@ export async function compileEntryPoint(buildPackage: BuildPackage, tsconfigName
   return ngcCompile(ngcFlags).catch(() => {
     const error = red(`Failed to compile ${secondaryEntryPoint} using ${entryPointTsconfigPath}`);
     console.error(error);
+    return Promise.reject(error);
   });
 }