diff --git a/runtime/src/main/kotlin/kotlin/system/Process.kt b/runtime/src/main/kotlin/kotlin/system/Process.kt
index 38947054d21..c2a2eaaef9d 100644
--- a/runtime/src/main/kotlin/kotlin/system/Process.kt
+++ b/runtime/src/main/kotlin/kotlin/system/Process.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.
+ */
+
 package kotlin.system
 
 /**
diff --git a/runtime/src/main/kotlin/kotlin/system/Timing.kt b/runtime/src/main/kotlin/kotlin/system/Timing.kt
index b1a329808ce..46dc0fa9e3e 100644
--- a/runtime/src/main/kotlin/kotlin/system/Timing.kt
+++ b/runtime/src/main/kotlin/kotlin/system/Timing.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.
+ */
+
 package kotlin.system
 
 @PublishedApi