diff --git a/src/environment/ReactServerRendering.js b/src/environment/ReactServerRendering.js
index cbecdad4d2..b7c43d13ec 100644
--- a/src/environment/ReactServerRendering.js
+++ b/src/environment/ReactServerRendering.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @typechecks
  * @providesModule ReactServerRendering
  */
diff --git a/src/environment/__tests__/ReactServerRendering-test.js b/src/environment/__tests__/ReactServerRendering-test.js
index d16ad8f5dd..779730a68f 100644
--- a/src/environment/__tests__/ReactServerRendering-test.js
+++ b/src/environment/__tests__/ReactServerRendering-test.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @jsx React.DOM
  * @emails react-core
  */
diff --git a/src/event/synthetic/SyntheticEvent.js b/src/event/synthetic/SyntheticEvent.js
index cb5a40aa4e..c72275f679 100644
--- a/src/event/synthetic/SyntheticEvent.js
+++ b/src/event/synthetic/SyntheticEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticFocusEvent.js b/src/event/synthetic/SyntheticFocusEvent.js
index ac7bf4131a..8ba8e73c5c 100644
--- a/src/event/synthetic/SyntheticFocusEvent.js
+++ b/src/event/synthetic/SyntheticFocusEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticFocusEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticKeyboardEvent.js b/src/event/synthetic/SyntheticKeyboardEvent.js
index ba1b0ad37f..64448c91f9 100644
--- a/src/event/synthetic/SyntheticKeyboardEvent.js
+++ b/src/event/synthetic/SyntheticKeyboardEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticKeyboardEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticMouseEvent.js b/src/event/synthetic/SyntheticMouseEvent.js
index 88c35fd447..fa3fed1c23 100644
--- a/src/event/synthetic/SyntheticMouseEvent.js
+++ b/src/event/synthetic/SyntheticMouseEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticMouseEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticMutationEvent.js b/src/event/synthetic/SyntheticMutationEvent.js
index 5de287e029..84fcbf187b 100644
--- a/src/event/synthetic/SyntheticMutationEvent.js
+++ b/src/event/synthetic/SyntheticMutationEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticMutationEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticTouchEvent.js b/src/event/synthetic/SyntheticTouchEvent.js
index 2ca7023528..ccc4fe89d1 100644
--- a/src/event/synthetic/SyntheticTouchEvent.js
+++ b/src/event/synthetic/SyntheticTouchEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticTouchEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticUIEvent.js b/src/event/synthetic/SyntheticUIEvent.js
index 25c781490e..314d9d81b1 100644
--- a/src/event/synthetic/SyntheticUIEvent.js
+++ b/src/event/synthetic/SyntheticUIEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticUIEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/SyntheticWheelEvent.js b/src/event/synthetic/SyntheticWheelEvent.js
index b89d726d7a..857c8eaa9f 100644
--- a/src/event/synthetic/SyntheticWheelEvent.js
+++ b/src/event/synthetic/SyntheticWheelEvent.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @providesModule SyntheticWheelEvent
  * @typechecks
  */
diff --git a/src/event/synthetic/__tests__/SyntheticEvent-test.js b/src/event/synthetic/__tests__/SyntheticEvent-test.js
index 3fd18cf612..39c63f3c74 100644
--- a/src/event/synthetic/__tests__/SyntheticEvent-test.js
+++ b/src/event/synthetic/__tests__/SyntheticEvent-test.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @emails react-core
  */
 
diff --git a/src/event/synthetic/__tests__/SyntheticWheelEvent-test.js b/src/event/synthetic/__tests__/SyntheticWheelEvent-test.js
index 78af645e27..c14afa895c 100644
--- a/src/event/synthetic/__tests__/SyntheticWheelEvent-test.js
+++ b/src/event/synthetic/__tests__/SyntheticWheelEvent-test.js
@@ -1,4 +1,18 @@
 /**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * 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.
+ *
  * @emails react-core
  */