diff --git a/reporter/testviewer.py b/reporter/testviewer.py
index f35a00e..11d9bd2 100644
--- a/reporter/testviewer.py
+++ b/reporter/testviewer.py
@@ -55,20 +55,22 @@ class SkippedTest(Gtk.Label):
 
 
 class TestOutput(Gtk.Box):
-    def __init__(self, stdout, stderr):
+    def __init__(self, sysout, syserr):
         Gtk.Box.__init__(self, orientation=Gtk.Orientation.VERTICAL)
         self.add_css_class("popover")
         self.stack = Gtk.Stack(vexpand=True, transition_type=Gtk.StackTransitionType.OVER_LEFT_RIGHT)
         self.prepend(self.stack)
         self.prepend(Gtk.StackSwitcher(stack=self.stack))
-        self.add_page("stdout", stdout)
-        self.add_page("stderr", stderr)
-        self.set_size_request(400, 500)
+        self.add_page("system-out", sysout, visible=False)
+        self.add_page("system-err", syserr, visible=True)
+        self.set_size_request(900, 500)
 
-    def add_page(self, name, buffer):
+    def add_page(self, name, buffer, visible):
         view = Gtk.TextView(monospace=True)
         view.set_buffer(buffer)
         self.stack.add_titled(Gtk.ScrolledWindow(child=view), name, name)
+        if visible:
+            self.stack.set_visible_child_name(name)
 
 
 class FailedTest(Gtk.MenuButton):