diff --git a/testsuite/reftests/unresolvable.css b/testsuite/reftests/unresolvable.css
index 94ef135351..79c48b0c9c 100644
--- a/testsuite/reftests/unresolvable.css
+++ b/testsuite/reftests/unresolvable.css
@@ -1,12 +1,13 @@
 @import "reset-to-defaults.css";
 
 window {
+  background-color: black;
+}
+
+box {
   background-color: @doesntexist;
   box-shadow: @nonexistant 5px 5px;
-  border-image: -gtk-gradient(linear,
-                              left top, left bottom,
-                              from(@notaavailable),
-                              to(@whatever)) 2;
+  border-image: linear-gradient(to top, @notaavailable, @whatever);
 }
 
 #reference {
diff --git a/testsuite/reftests/unresolvable.ref.ui b/testsuite/reftests/unresolvable.ref.ui
index 973a68ffd4..ac585215e6 100644
--- a/testsuite/reftests/unresolvable.ref.ui
+++ b/testsuite/reftests/unresolvable.ref.ui
@@ -1,11 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <!-- interface-requires gtk+ 3.0 -->
-  <object class="GtkWindow" id="window1">
-    <property name="width_request">10</property>
-    <property name="height_request">10</property>
+  <object class="GtkWindow">
     <property name="can_focus">False</property>
     <property name="type">popup</property>
-    <property name="name">reference</property>
+    <child>
+      <object class="GtkBox">
+        <property name="name">reference</property>
+        <property name="width_request">10</property>
+        <property name="height_request">10</property>
+      </object>
+    </child>
   </object>
 </interface>
diff --git a/testsuite/reftests/unresolvable.ui b/testsuite/reftests/unresolvable.ui
index 2f24fa197b..1b46903939 100644
--- a/testsuite/reftests/unresolvable.ui
+++ b/testsuite/reftests/unresolvable.ui
@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <!-- interface-requires gtk+ 3.0 -->
-  <object class="GtkWindow" id="window1">
-    <property name="width_request">10</property>
-    <property name="height_request">10</property>
+  <object class="GtkWindow">
     <property name="can_focus">False</property>
     <property name="type">popup</property>
     <child>
-      <placeholder/>
+      <object class="GtkBox">
+        <property name="width_request">10</property>
+        <property name="height_request">10</property>
+      </object>
     </child>
   </object>
 </interface>