diff --git a/hgext/beautifygraph.py b/hgext/beautifygraph.py
--- a/hgext/beautifygraph.py
+++ b/hgext/beautifygraph.py
@@ -34,13 +34,13 @@
                     return '\xE2\x94\x9C' # U+251C ├
                 if after  == ' ' and not before == ' ':
                     return '\xE2\x94\xA4' # U+2524 ┤
-            return '\xE2\x94\xBC' # U+253C ┼
-        return edge
-    line = ' %s ' % line
-    pretty = []
-    for idx in xrange(len(line) - 2):
-        pretty.append(prettyedge(line[idx], line[idx + 1], line[idx + 2]))
-    return ''.join(pretty)
+                return '\xE2\x94\xBC' # U+253C ┼
+            return edge
+        line = ' %s ' % line
+        pretty = []
+        for idx in xrange(len(line) - 2):
+            pretty.append(prettyedge(line[idx], line[idx + 1], line[idx + 2]))
+        return ''.join(pretty)
 
     def getprettygraphnode(orig, *args, **kwargs):
         node = orig(*args, **kwargs)