diff --git a/web/buildSrc/src/main/kotlin/karmaconf.kt b/web/buildSrc/src/main/kotlin/karmaconf.kt
index 7e07823481..3770113ea8 100644
--- a/web/buildSrc/src/main/kotlin/karmaconf.kt
+++ b/web/buildSrc/src/main/kotlin/karmaconf.kt
@@ -13,5 +13,5 @@ fun KotlinKarma.standardConf() {
     }
     useConfigDirectory("${kotlinKarmaConfig.rootDir}/test-utils/conf/karma.config.common.d")
     useChromeHeadless()
-    useFirefox()
+    useFirefoxHeadless()
 }