diff --git a/tests/modules/si-audio-adapter.c b/tests/modules/si-audio-adapter.c
index ef229d7d..cd34abc1 100644
--- a/tests/modules/si-audio-adapter.c
+++ b/tests/modules/si-audio-adapter.c
@@ -97,6 +97,9 @@ test_si_audio_adapter_configure_activate (TestFixture * f,
     str = wp_properties_get (props, "enable.monitor");
     g_assert_nonnull (str);
     g_assert_cmpstr ("0", ==, str);
+    str = wp_properties_get (props, "is.device");
+    g_assert_nonnull (str);
+    g_assert_cmpstr ("1", ==, str);
     str = wp_properties_get (props, "si.factory.name");
     g_assert_nonnull (str);
     g_assert_cmpstr ("si-audio-adapter", ==, str);