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-rw-r--r--tests/test_ext_graphviz.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/test_ext_graphviz.py b/tests/test_ext_graphviz.py
index aa97f4135..7d464343f 100644
--- a/tests/test_ext_graphviz.py
+++ b/tests/test_ext_graphviz.py
@@ -26,7 +26,7 @@ def skip_if_graphviz_not_found(fn):
dot = subprocess.Popen([graphviz_dot, '-V'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE) # show version
- dot.wait()
+ dot.communicate()
found = True
except OSError: # No such file or directory
pass