diff --git a/tests/wpt/metadata-css/css-flexbox-1_dev/html/flex-flexitem-percentage-prescation.htm.ini b/tests/wpt/metadata-css/css-flexbox-1_dev/html/flex-flexitem-percentage-prescation.htm.ini
new file mode 100644
index 000000000000..372b8e7ded2f
--- /dev/null
+++ b/tests/wpt/metadata-css/css-flexbox-1_dev/html/flex-flexitem-percentage-prescation.htm.ini
@@ -0,0 +1,4 @@
+[flex-flexitem-percentage-prescation.htm]
+  type: reftest
+  expected:
+    if os == "linux": FAIL
diff --git a/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-001.htm.ini b/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-001.htm.ini
new file mode 100644
index 000000000000..3968392f46d5
--- /dev/null
+++ b/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-001.htm.ini
@@ -0,0 +1,3 @@
+[run-in-listitem-between-001.htm]
+  type: reftest
+  expected: FAIL
diff --git a/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-002.htm.ini b/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-002.htm.ini
new file mode 100644
index 000000000000..8605faaf1a29
--- /dev/null
+++ b/tests/wpt/metadata-css/css21_dev/html4/run-in-listitem-between-002.htm.ini
@@ -0,0 +1,3 @@
+[run-in-listitem-between-002.htm]
+  type: reftest
+  expected: FAIL