diff --git a/src/testdir/test87.in b/src/testdir/test87.in
index 2308fde..7ad05de 100644
--- a/src/testdir/test87.in
+++ b/src/testdir/test87.in
@@ -367,7 +367,7 @@
 :sleep 1
 :py3 t.running = False
 :py3 t.join()
-:py3 l[0] = t.t > 8  # check if the background thread is working
+:py3 l[0] = t.t > 7  # check if the background thread is working
 :py3 del time
 :py3 del threading
 :py3 del t