diff --git a/tests/reftests/Makefile.am b/tests/reftests/Makefile.am
index 0d4c19d977..710a83d0c5 100644
--- a/tests/reftests/Makefile.am
+++ b/tests/reftests/Makefile.am
@@ -119,6 +119,8 @@ EXTRA_DIST += \
 	label-small-ellipsized.ui \
 	label-wrap-justify.ref.ui \
 	label-wrap-justify.ui \
+	messagedialog-secondarytext.ui \
+	messagedialog-secondarytext.ref.ui \
 	misc-alignment.css \
 	misc-alignment.ui \
 	misc-alignment.ref.ui \
diff --git a/tests/reftests/messagedialog-secondarytext.ref.ui b/tests/reftests/messagedialog-secondarytext.ref.ui
new file mode 100644
index 0000000000..6f7381c878
--- /dev/null
+++ b/tests/reftests/messagedialog-secondarytext.ref.ui
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <!-- interface-requires gtk+ 3.0 -->
+  <object class="GtkMessageDialog" id="messagedialog1">
+    <property name="can_focus">False</property>
+    <property name="border_width">5</property>
+    <property name="type">popup</property>
+    <property name="type_hint">dialog</property>
+    <property name="skip_taskbar_hint">True</property>
+    <property name="buttons">ok</property>
+    <property name="text" translatable="yes">Text</property>
+    <property name="secondary_text" translatable="yes">Secondary text #5</property>
+  </object>
+</interface>
diff --git a/tests/reftests/messagedialog-secondarytext.ui b/tests/reftests/messagedialog-secondarytext.ui
new file mode 100644
index 0000000000..ed1767bbb0
--- /dev/null
+++ b/tests/reftests/messagedialog-secondarytext.ui
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <!-- interface-requires gtk+ 3.0 -->
+  <object class="GtkMessageDialog" id="messagedialog1">
+    <property name="can_focus">False</property>
+    <property name="border_width">5</property>
+    <property name="type">popup</property>
+    <property name="type_hint">dialog</property>
+    <property name="skip_taskbar_hint">True</property>
+    <property name="buttons">ok</property>
+    <property name="text" translatable="yes">Text</property>
+    <!-- We set the property multiple times on purpose here -->
+    <property name="secondary_text" translatable="yes">Secondary text #1</property>
+    <property name="secondary_text" translatable="yes">Secondary text #2</property>
+    <property name="secondary_text" translatable="yes">Secondary text #3</property>
+    <property name="secondary_text" translatable="yes">Secondary text #4</property>
+    <property name="secondary_text" translatable="yes">Secondary text #5</property>
+  </object>
+</interface>