1diff --git a/pygraphviz/agraph.py b/pygraphviz/agraph.py
2index d539ba0..f5bac3f 100644
3--- a/pygraphviz/agraph.py
4+++ b/pygraphviz/agraph.py
5@@ -1792,7 +1792,7 @@ class AGraph:
6 if platform.system() == "Windows":
7 name += ".exe"
8
9- paths = os.environ["PATH"]
10+ paths = '@path@'
11 for path in paths.split(os.pathsep):
12 match = glob.glob(os.path.join(path, name))
13 if match: