diff --git a/packages/angular/build/src/builders/unit-test/options.ts b/packages/angular/build/src/builders/unit-test/options.ts
index 72b5f3eb3e8d..0a71f2d642f1 100644
--- a/packages/angular/build/src/builders/unit-test/options.ts
+++ b/packages/angular/build/src/builders/unit-test/options.ts
@@ -116,7 +116,7 @@ export async function normalizeOptions(
     buildProgress: progress,
     reporters: normalizeReporterOption(options.reporters),
     outputFile: options.outputFile,
-    browsers,
+    browsers: browsers?.length ? browsers : undefined,
     browserViewport: width && height ? { width, height } : undefined,
     watch,
     debug: options.debug ?? false,