diff --git a/test/cases/000_build/000_outputs/test.yml b/test/cases/000_build/000_outputs/test.yml
index 7cadc7ec8..2ae906e34 100644
--- a/test/cases/000_build/000_outputs/test.yml
+++ b/test/cases/000_build/000_outputs/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/000_run_kernel/test.yml b/test/cases/010_platforms/000_qemu/000_run_kernel/test.yml
index 35f04c2cd..d6f9dca26 100644
--- a/test/cases/010_platforms/000_qemu/000_run_kernel/test.yml
+++ b/test/cases/010_platforms/000_qemu/000_run_kernel/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/010_run_iso/test.yml b/test/cases/010_platforms/000_qemu/010_run_iso/test.yml
index 1e4e411c5..630d5eff1 100644
--- a/test/cases/010_platforms/000_qemu/010_run_iso/test.yml
+++ b/test/cases/010_platforms/000_qemu/010_run_iso/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/020_run_efi/test.yml b/test/cases/010_platforms/000_qemu/020_run_efi/test.yml
index 35f04c2cd..d6f9dca26 100644
--- a/test/cases/010_platforms/000_qemu/020_run_efi/test.yml
+++ b/test/cases/010_platforms/000_qemu/020_run_efi/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/030_run_qcow/test.yml b/test/cases/010_platforms/000_qemu/030_run_qcow/test.yml
index 35f04c2cd..d6f9dca26 100644
--- a/test/cases/010_platforms/000_qemu/030_run_qcow/test.yml
+++ b/test/cases/010_platforms/000_qemu/030_run_qcow/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/040_run_raw/test.yml b/test/cases/010_platforms/000_qemu/040_run_raw/test.yml
index 35f04c2cd..d6f9dca26 100644
--- a/test/cases/010_platforms/000_qemu/040_run_raw/test.yml
+++ b/test/cases/010_platforms/000_qemu/040_run_raw/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/000_qemu/100_container/test.yml b/test/cases/010_platforms/000_qemu/100_container/test.yml
index 0d339e541..9522cde7d 100644
--- a/test/cases/010_platforms/000_qemu/100_container/test.yml
+++ b/test/cases/010_platforms/000_qemu/100_container/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/010_platforms/010_hyperkit/000_run_kernel/test.yml b/test/cases/010_platforms/010_hyperkit/000_run_kernel/test.yml
index 35f04c2cd..d6f9dca26 100644
--- a/test/cases/010_platforms/010_hyperkit/000_run_kernel/test.yml
+++ b/test/cases/010_platforms/010_hyperkit/000_run_kernel/test.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
diff --git a/test/cases/030_security/000_docker-bench/test-docker-bench.yml b/test/cases/030_security/000_docker-bench/test-docker-bench.yml
index f652191c7..165c029d7 100644
--- a/test/cases/030_security/000_docker-bench/test-docker-bench.yml
+++ b/test/cases/030_security/000_docker-bench/test-docker-bench.yml
@@ -1,6 +1,6 @@
 kernel:
   image: "linuxkit/kernel:4.9.x"
-  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+  cmdline: "console=ttyS0"
 init:
   - linuxkit/init:2599bcd5013ce5962aa155ee8929c26160de13bd
   - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f