diff --git a/tests/reftests/background-area.css b/tests/reftests/background-area.css
index 0cb009467a..209f58673f 100644
--- a/tests/reftests/background-area.css
+++ b/tests/reftests/background-area.css
@@ -47,7 +47,7 @@ GtkButton {
 
 #reference3 {
   border-color: rgb(153,102,0);
-  background-color: none;
+  background-color: transparent;
   padding: 5;
 }
 
diff --git a/tests/reftests/no-colors.css b/tests/reftests/no-colors.css
index da899757f2..6091b9fabf 100644
--- a/tests/reftests/no-colors.css
+++ b/tests/reftests/no-colors.css
@@ -1,7 +1,7 @@
 * {
-  background-color: none;
-  color: none;
-  border-color: none;
+  background-color: transparent;
+  color: transparent;
+  border-color: transparent;
   border-style: solid;
   border-width: 1;
 }