The usual.
diff --git a/Lib/dos-8x3/test_rgb.py b/Lib/dos-8x3/test_rgb.py
index c5b7c83..0c449da 100755
--- a/Lib/dos-8x3/test_rgb.py
+++ b/Lib/dos-8x3/test_rgb.py
@@ -9,32 +9,32 @@
 print 'RGBimg test suite:'
 
 def findfile(file):
-	if os.path.isabs(file): return file
-	import sys
-	path = sys.path
-	try:
-	    path = [os.path.dirname(__file__)] + path
-	except NameError:
-	    pass
-	for dn in path:
-		fn = os.path.join(dn, file)
-		if os.path.exists(fn): return fn
-	return file
+        if os.path.isabs(file): return file
+        import sys
+        path = sys.path
+        try:
+            path = [os.path.dirname(__file__)] + path
+        except NameError:
+            pass
+        for dn in path:
+                fn = os.path.join(dn, file)
+                if os.path.exists(fn): return fn
+        return file
 
 def testimg(rgb_file, raw_file):
-	rgb_file = findfile(rgb_file)
-	raw_file = findfile(raw_file)
-	width, height = rgbimg.sizeofimage(rgb_file)
-	rgb = rgbimg.longimagedata(rgb_file)
-	if len(rgb) != width * height * 4:
-		raise error, 'bad image length'
-	raw = open(raw_file, 'rb').read()
-	if rgb != raw:
-		raise error, \
-		      'images don\'t match for '+rgb_file+' and '+raw_file
-	for depth in [1, 3, 4]:
-		rgbimg.longstoimage(rgb, width, height, depth, '@.rgb')
-	os.unlink('@.rgb')
+        rgb_file = findfile(rgb_file)
+        raw_file = findfile(raw_file)
+        width, height = rgbimg.sizeofimage(rgb_file)
+        rgb = rgbimg.longimagedata(rgb_file)
+        if len(rgb) != width * height * 4:
+                raise error, 'bad image length'
+        raw = open(raw_file, 'rb').read()
+        if rgb != raw:
+                raise error, \
+                      'images don\'t match for '+rgb_file+' and '+raw_file
+        for depth in [1, 3, 4]:
+                rgbimg.longstoimage(rgb, width, height, depth, '@.rgb')
+        os.unlink('@.rgb')
 
 table = [
     ('testrgb.uue', 'test.rgb'),
@@ -45,7 +45,7 @@
     source = findfile(source)
     target = findfile(target)
     if verbose:
-	print "uudecoding", source, "->", target, "..."
+        print "uudecoding", source, "->", target, "..."
     uu.decode(source, target)
 
 if verbose:
@@ -53,23 +53,23 @@
 
 ttob = rgbimg.ttob(0)
 if ttob != 0:
-	raise error, 'ttob should start out as zero'
+        raise error, 'ttob should start out as zero'
 
 testimg('test.rgb', 'test.rawimg')
 
 ttob = rgbimg.ttob(1)
 if ttob != 0:
-	raise error, 'ttob should be zero'
+        raise error, 'ttob should be zero'
 
 testimg('test.rgb', 'test.rawimg.rev')
 
 ttob = rgbimg.ttob(0)
 if ttob != 1:
-	raise error, 'ttob should be one'
+        raise error, 'ttob should be one'
 
 ttob = rgbimg.ttob(0)
 if ttob != 0:
-	raise error, 'ttob should be zero'
+        raise error, 'ttob should be zero'
 
 for source, target in table:
     unlink(findfile(target))