diff --git a/PIL/PsdImagePlugin.py b/PIL/PsdImagePlugin.py
index a3fa75368..211393cdb 100644
--- a/PIL/PsdImagePlugin.py
+++ b/PIL/PsdImagePlugin.py
@@ -28,6 +28,7 @@ MODES = {
     (2, 8): ("P", 1),
     (3, 8): ("RGB", 3),
     (4, 8): ("CMYK", 4),
+    (4, 16): ("CMYK", 4),
     (7, 8): ("L", 1), # FIXME: multilayer
     (8, 8): ("L", 1), # duotone
     (9, 8): ("LAB", 3)
diff --git a/docs/HISTORY.txt b/docs/HISTORY.txt
index 4e61263a7..cd5148d68 100644
--- a/docs/HISTORY.txt
+++ b/docs/HISTORY.txt
@@ -5,9 +5,15 @@ Changelog
 1.7.8 (Unreleased)
 ------------------
 
-- Fix opening psd files with RGBA layers when A mode is not of type 65535 but 3.
-  Fixes issue https://github.com/python-imaging/Pillow/issues/3
-  [thomasdesvenain]
+- Manage more psd files:
+
+    - Added a psd mode (mode 4, 16 bits).
+      [thomasdesvenain]
+
+    - Fix opening psd files with RGBA layers when A mode is not of type 65535 but 3.
+      Fixes issue https://github.com/python-imaging/Pillow/issues/3
+      [thomasdesvenain]
+
 
 1.7.7 (2012-04-04)
 ------------------