diff --git a/test/src/process-tests.el b/test/src/process-tests.el
index 14092187e0b..725da084e72 100644
--- a/test/src/process-tests.el
+++ b/test/src/process-tests.el
@@ -939,7 +939,7 @@ Return nil if FILENAME doesn't exist."
                         (< (float-time) (+ t0 limit)))
               (sit-for 0.1)))
           (should status)
-          (should-not (assq :error status))
+          (should-not (plist-get status ':error))
           (should buf)
           (should (> (buffer-size buf) 0))
           )