diff --git a/testsuite/tools/simplify/test2.expected b/testsuite/tools/simplify/test2.expected
index 20ffe8d3bb..99fefb9511 100644
--- a/testsuite/tools/simplify/test2.expected
+++ b/testsuite/tools/simplify/test2.expected
@@ -1,6 +1,6 @@
 <!-- non-default property not stripped -->
 <interface>
   <object class="GtkWindow">
-    <property name="visible">True</property>
+    <property name="visible">1</property>
   </object>
 </interface>
diff --git a/testsuite/tools/simplify/test3.expected b/testsuite/tools/simplify/test3.expected
index 2490e7900a..6b9c07f163 100644
--- a/testsuite/tools/simplify/test3.expected
+++ b/testsuite/tools/simplify/test3.expected
@@ -1,6 +1,6 @@
 <!-- translatable property not stripped -->
 <interface>
   <object class="GtkWindow">
-    <property name="visible" translatable="yes">False</property>
+    <property name="visible" translatable="yes">0</property>
   </object>
 </interface>
diff --git a/testsuite/tools/simplify/test4.expected b/testsuite/tools/simplify/test4.expected
index 41d8ecce20..286f1062ec 100644
--- a/testsuite/tools/simplify/test4.expected
+++ b/testsuite/tools/simplify/test4.expected
@@ -1,6 +1,6 @@
 <!-- irrelevant comments and context are stripped -->
 <interface>
   <object class="GtkWindow">
-    <property name="visible">True</property>
+    <property name="visible">1</property>
   </object>
 </interface>
diff --git a/testsuite/tools/simplify/test8.expected b/testsuite/tools/simplify/test8.expected
index d5b6825347..df3c4077e3 100644
--- a/testsuite/tools/simplify/test8.expected
+++ b/testsuite/tools/simplify/test8.expected
@@ -4,7 +4,7 @@
     <child>
       <object class="GtkLabel"/>
       <packing>
-        <property name="expand">True</property>
+        <property name="expand">1</property>
       </packing>
     </child>
   </object>