diff --git a/Lib/test/test_imageop.py b/Lib/test/test_imageop.py
index 327726d..fc8dadf 100755
--- a/Lib/test/test_imageop.py
+++ b/Lib/test/test_imageop.py
@@ -36,7 +36,7 @@
 	print 'tovideo'
     videoimage = imageop.tovideo (image, 4, width, height)
 
-    # Convert an rgb image to an 8 bit rgb (greyscale)
+    # Convert an rgb image to an 8 bit rgb
     if verbose:
 	print 'rgb2rgb8'
     greyimage = imageop.rgb2rgb8(image, width, height)
@@ -46,6 +46,16 @@
 	print 'rgb82rgb'
     image = imageop.rgb82rgb(greyimage, width, height)
     
+    # Convert an rgb image to an 8 bit greyscale image
+    if verbose:
+	print 'rgb2grey'
+    greyimage = imageop.rgb2grey(image, width, height)
+
+    # Convert an 8 bit greyscale image to a 24 bit rgb image
+    if verbose:
+	print 'grey2rgb'
+    image = imageop.grey2rgb(greyimage, width, height)
+    
     # Convert a 8-bit deep greyscale image to a 1-bit deep image by
     # tresholding all the pixels. The resulting image is tightly packed
     # and is probably only useful as an argument to mono2grey.