diff --git a/buildSrc/src/main/kotlin/tasks.kt b/buildSrc/src/main/kotlin/tasks.kt
index 602bce4c448..5796f045854 100644
--- a/buildSrc/src/main/kotlin/tasks.kt
+++ b/buildSrc/src/main/kotlin/tasks.kt
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 @file:Suppress("unused") // usages in build scripts are not tracked properly
 
 import org.gradle.api.Project
@@ -57,6 +73,7 @@ fun Project.projectTest(taskName: String = "test", body: Test.() -> Unit = {}):
     environment("PROJECT_CLASSES_DIRS", the<JavaPluginConvention>().sourceSets.getByName("test").output.classesDirs.asPath)
     environment("PROJECT_BUILD_DIR", buildDir)
     systemProperty("jps.kotlin.home", rootProject.extra["distKotlinHomeDir"])
+    systemProperty("kotlin.ni", if (rootProject.hasProperty("newInferenceTests")) "true" else "false")
     body()
 }