diff --git a/test/lisp/progmodes/python-tests.el b/test/lisp/progmodes/python-tests.el
index 878f60f1614..e3b1642a975 100644
--- a/test/lisp/progmodes/python-tests.el
+++ b/test/lisp/progmodes/python-tests.el
@@ -4896,7 +4896,8 @@ def foo():
 
 (ert-deftest python-shell-completion-at-point-ipython ()
   "Check if Python shell completion works for IPython."
-  (let ((python-shell-interpreter "ipython")
+  (let ((python-tests-shell-interpreter "ipython")
+        (python-shell-interpreter "ipython")
         (python-shell-interpreter-args "-i --simple-prompt"))
     (skip-unless
      (and