diff --git a/PIL/ImageDraw.py b/PIL/ImageDraw.py
index 1d5f53746..248c68b2a 100644
--- a/PIL/ImageDraw.py
+++ b/PIL/ImageDraw.py
@@ -87,12 +87,12 @@ class ImageDraw(object):
         self.font = None
 
     def setink(self, ink):
-        raise Exception("setink() has been removed. " +
-                        "Please use keyword arguments instead.")
+        raise NotImplementedError("setink() has been removed. " +
+                                  "Please use keyword arguments instead.")
 
     def setfill(self, onoff):
-        raise Exception("setfill() has been removed. " +
-                        "Please use keyword arguments instead.")
+        raise NotImplementedError("setfill() has been removed. " +
+                                  "Please use keyword arguments instead.")
 
     def setfont(self, font):
         warnings.warn("setfont() is deprecated. " +
diff --git a/PIL/ImageWin.py b/PIL/ImageWin.py
index 58894d604..3b5bac171 100644
--- a/PIL/ImageWin.py
+++ b/PIL/ImageWin.py
@@ -183,12 +183,12 @@ class Dib(object):
         return self.image.tobytes()
 
     def fromstring(self, *args, **kw):
-        raise Exception("fromstring() has been removed. " +
-                        "Please use frombytes() instead.")
+        raise NotImplementedError("fromstring() has been removed. " +
+                                  "Please use frombytes() instead.")
 
     def tostring(self, *args, **kw):
-        raise Exception("tostring() has been removed. " +
-                        "Please use tobytes() instead.")
+        raise NotImplementedError("tostring() has been removed. " +
+                                  "Please use tobytes() instead.")
 
 
 ##