diff --git a/pytools/graph.py b/pytools/graph.py
index 12797679c9ac2ed8c0c0532814a8c726d589ea2b..3ae19a6f05e63d1c2847a41ce4bc5dc9cfeca56e 100644
--- a/pytools/graph.py
+++ b/pytools/graph.py
@@ -321,13 +321,4 @@ def compute_induced_subgraph(graph, subgraph_nodes):
 
 # }}}
 
-
-def _test():
-    import doctest
-    doctest.testmod()
-
-
-if __name__ == "__main__":
-    _test()
-
 # vim: foldmethod=marker