diff --git a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/service/RemoteExternalSystemCommunicationManager.java b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/service/RemoteExternalSystemCommunicationManager.java
index 2b9a4e344244..1fc0ac9d4fd6 100644
--- a/platform/external-system-impl/src/com/intellij/openapi/externalSystem/service/RemoteExternalSystemCommunicationManager.java
+++ b/platform/external-system-impl/src/com/intellij/openapi/externalSystem/service/RemoteExternalSystemCommunicationManager.java
@@ -65,6 +65,7 @@ import com.intellij.util.PathUtil;
 import com.intellij.util.SystemProperties;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.containers.ContainerUtilRt;
+import kotlin.Unit;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -151,6 +152,9 @@ public class RemoteExternalSystemCommunicationManager implements ExternalSystemC
         ContainerUtil.addIfNotNull(PathUtil.getJarPathForClass(EmptyModuleType.class), classPath);
         ContainerUtil.addIfNotNull(PathUtil.getJarPathForClass(LanguageLevel.class), classPath);
 
+        // add Kotlin runtime
+        ContainerUtil.addIfNotNull(PathUtil.getJarPathForClass(Unit.class), classPath);
+
         // External system module jars
         ContainerUtil.addIfNotNull(PathUtil.getJarPathForClass(getClass()), classPath);
         // external-system-rt.jar