diff --git a/packages/nimble-components/karma.conf.headless.js b/packages/nimble-components/karma.conf.headless.js
index 375c15088a..e1b52b460d 100644
--- a/packages/nimble-components/karma.conf.headless.js
+++ b/packages/nimble-components/karma.conf.headless.js
@@ -12,7 +12,8 @@ module.exports = config => {
         specReporter: {
             suppressPassed: false,
             suppressSkipped: true,
-            showSpecTiming: true
+            showSpecTiming: true,
+            reportSlowerThan: 2000
         }
     };