diff --git a/gio/tests/gdbus-export.c b/gio/tests/gdbus-export.c
index ef0dddeee..4d6d3a43e 100644
--- a/gio/tests/gdbus-export.c
+++ b/gio/tests/gdbus-export.c
@@ -813,7 +813,7 @@ test_dispatch_thread_func (gpointer user_data)
                                   NULL,
                                   &error);
   g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS);
-  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Type of message, '(s)', does not match expected type '()'");
+  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Type of message, “(s)”, does not match expected type “()”");
   g_error_free (error);
   g_assert (value == NULL);
 
@@ -826,7 +826,7 @@ test_dispatch_thread_func (gpointer user_data)
                                   NULL,
                                   &error);
   g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD);
-  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such method 'NonExistantMethod'");
+  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such method “NonExistantMethod”");
   g_error_free (error);
   g_assert (value == NULL);
 
@@ -874,7 +874,7 @@ test_dispatch_thread_func (gpointer user_data)
                                   &error);
   g_assert (value == NULL);
   g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS);
-  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such property 'ThisDoesntExist'");
+  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such property “ThisDoesntExist”");
   g_error_free (error);
 
   error = NULL;
@@ -889,7 +889,7 @@ test_dispatch_thread_func (gpointer user_data)
                                   &error);
   g_assert (value == NULL);
   g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS);
-  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Property 'NotReadable' is not readable");
+  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Property “NotReadable” is not readable");
   g_error_free (error);
 
   error = NULL;
@@ -926,7 +926,7 @@ test_dispatch_thread_func (gpointer user_data)
                                   &error);
   g_assert (value == NULL);
   g_assert_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS);
-  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Property 'NotWritable' is not writable");
+  g_assert_cmpstr (error->message, ==, "GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Property “NotWritable” is not writable");
   g_error_free (error);
 
   error = NULL;