diff --git a/test/testcases/blacklist/ptf.t b/test/testcases/blacklist/ptf.t
index e11dcfd3..0005042b 100644
--- a/test/testcases/blacklist/ptf.t
+++ b/test/testcases/blacklist/ptf.t
@@ -9,7 +9,7 @@ repo available 0 testtags <inline>
 #>=Pkg: A 1 1 noarch
 #>=Req: ptf-1
 
-system i686 * system
+system unset * system
 
 #
 # test 1: a ptf package cannot be pulled in via a dependency
diff --git a/test/testcases/blacklist/retracted.t b/test/testcases/blacklist/retracted.t
index 5a21bcd1..711e0868 100644
--- a/test/testcases/blacklist/retracted.t
+++ b/test/testcases/blacklist/retracted.t
@@ -6,7 +6,7 @@ repo available 0 testtags <inline>
 #>=Pkg: B 2 1 noarch
 #>=Prv: retracted-patch-package()
 
-system i686 * system
+system unset * system
 
 job blacklist provides retracted-patch-package()
 job install name patch