diff --git a/docs/PIL.rst b/docs/PIL.rst
index d098e1bb5..222322b0d 100644
--- a/docs/PIL.rst
+++ b/docs/PIL.rst
@@ -4,6 +4,14 @@ PIL Package (autodoc of remaining modules)
 Reference for modules whose documentation has not yet been ported or written
 can be found here.
 
+:mod:`PIL` Module
+-------------------------
+
+.. py:module:: PIL
+
+.. autoexception:: UnidentifiedImageError
+    :show-inheritance:
+
 :mod:`BdfFontFile` Module
 -------------------------
 
diff --git a/src/PIL/__init__.py b/src/PIL/__init__.py
index 81b87e012..d225ed134 100644
--- a/src/PIL/__init__.py
+++ b/src/PIL/__init__.py
@@ -132,4 +132,8 @@ _plugins = [
 
 
 class UnidentifiedImageError(OSError):
+    """
+    Raised in :py:meth:`PIL.Image.open` if an image cannot be opened and identified.
+    """
+
     pass