diff --git a/plugins/dummy/calls-dummy-origin.c b/plugins/dummy/calls-dummy-origin.c
index 6027f20..183e7c0 100644
--- a/plugins/dummy/calls-dummy-origin.c
+++ b/plugins/dummy/calls-dummy-origin.c
@@ -157,7 +157,7 @@ supports_protocol (CallsOrigin *origin,
   g_assert (protocol != NULL);
   g_assert (CALLS_IS_DUMMY_ORIGIN (origin));
 
-  return TRUE;
+  return g_strcmp0 (protocol, "tel") == 0;
 }