diff --git a/libraries/kotlin.test/js/it/build.gradle b/libraries/kotlin.test/js/it/build.gradle
index 652e5004405..49a690ce3ca 100644
--- a/libraries/kotlin.test/js/it/build.gradle
+++ b/libraries/kotlin.test/js/it/build.gradle
@@ -20,8 +20,10 @@ buildDir = "$projectDir/build"
 task populateNodeModules(type: Copy, dependsOn: compileKotlin2Js) {
     from compileKotlin2Js.destinationDir
 
-    configurations.testCompile.each {
-        from zipTree(it.absolutePath).matching { include '*.js' }
+    from {
+        configurations.testCompile.collect {
+            zipTree(it.absolutePath).matching { include '*.js' }
+        }
     }
 
     into "${buildDir}/node_modules"