diff --git a/testsuite/tools/simplify-data-3to4/nm-crash.expected b/testsuite/tools/simplify-data-3to4/nm-crash.expected
new file mode 100644
index 0000000000..a5b531f01a
--- /dev/null
+++ b/testsuite/tools/simplify-data-3to4/nm-crash.expected
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface domain="nm-applet">
+  <object class="GtkAssistant">
+    <child>
+      <object class="GtkAssistantPage">
+        <property name="page_type">confirm</property>
+        <property name="complete">True</property>
+        <property name="child">
+          <object class="GtkBox" id="confirm_page">
+            <property name="visible">0</property>
+          </object>
+        </property>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/testsuite/tools/simplify-data-3to4/nm-crash.ui b/testsuite/tools/simplify-data-3to4/nm-crash.ui
new file mode 100644
index 0000000000..d8bad14dec
--- /dev/null
+++ b/testsuite/tools/simplify-data-3to4/nm-crash.ui
@@ -0,0 +1,12 @@
+<interface domain="nm-applet">
+  <object class="GtkAssistant">
+    <child>
+      <object class="GtkBox" id="confirm_page">
+      </object>
+      <packing>
+        <property name="page_type">confirm</property>
+        <property name="complete">True</property>
+      </packing>
+    </child>
+  </object>
+</interface>