diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/mocha/KotlinMocha.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/mocha/KotlinMocha.kt
index 92870d98b8b..b762e1bc2b7 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/mocha/KotlinMocha.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/mocha/KotlinMocha.kt
@@ -44,7 +44,8 @@ class KotlinMocha(@Transient override val compilation: KotlinJsCompilation, priv
         get() = setOf(
             versions.kotlinJsTestRunner,
             versions.mocha,
-            versions.sourceMapSupport
+            versions.sourceMapSupport,
+            versions.formatUtil
         )
 
     override fun getPath() = "$basePath:kotlinMocha"
diff --git a/libraries/tools/kotlin-test-js-runner/src/teamcity-format.js b/libraries/tools/kotlin-test-js-runner/src/teamcity-format.js
index b4ba14d1523..6b6c72e9ffb 100644
--- a/libraries/tools/kotlin-test-js-runner/src/teamcity-format.js
+++ b/libraries/tools/kotlin-test-js-runner/src/teamcity-format.js
@@ -56,5 +56,5 @@ export function formatMessage() {
         formattedArguments.push(tcEscape(param));
     });
     formattedArguments.unshift(tcMessage);
-    return format(formattedArguments);
+    return format(...formattedArguments);
 }
\ No newline at end of file