1 files changed, 1 insertions, 1 deletions
diff --git a/t/op/threads.t b/t/op/threads.t
index 8709ece7f6..b8fb9a6abd 100644
--- a/t/op/threads.t
+++ b/t/op/threads.t
@@ -1,7 +1,7 @@
 #!./perl
 BEGIN {
      chdir 't' if -d 't';
-     unshift @INC, '../lib';
+     @INC = '../lib';
      require './test.pl';	# for which_perl() etc
 }