diff --git a/meta-python/recipes-devtools/python/python3-glances/run-ptest b/meta-python/recipes-devtools/python/python3-glances/run-ptest
index f56ca03dca..5903768942 100644
--- a/meta-python/recipes-devtools/python/python3-glances/run-ptest
+++ b/meta-python/recipes-devtools/python/python3-glances/run-ptest
@@ -1,3 +1,6 @@
 #!/bin/sh
 
-pytest tests/test_core.py
+# test_core.py does `GlancesMain(args_begin_at=2)` at module import time,
+# slicing the real process sys.argv; passing --automake on the command line
+# (rather than via PYTEST_ADDOPTS) shifts that slice and breaks it.
+PYTEST_ADDOPTS="--automake" pytest tests/test_core.py