diff --git a/tests/css/parser/declarations-valid-14.css b/tests/css/parser/declarations-valid-14.css
index 226e3afcec..f03feac39b 100644
--- a/tests/css/parser/declarations-valid-14.css
+++ b/tests/css/parser/declarations-valid-14.css
@@ -1 +1 @@
-* { padding: 5 }
+* { padding: 5px }
diff --git a/tests/css/parser/declarations-valid-14.ref.css b/tests/css/parser/declarations-valid-14.ref.css
index 28b5f8133e..c873e4fa46 100644
--- a/tests/css/parser/declarations-valid-14.ref.css
+++ b/tests/css/parser/declarations-valid-14.ref.css
@@ -1,6 +1,6 @@
 * {
-  padding-bottom: 5;
-  padding-left: 5;
-  padding-right: 5;
-  padding-top: 5;
+  padding-bottom: 5px;
+  padding-left: 5px;
+  padding-right: 5px;
+  padding-top: 5px;
 }