diff --git a/tests/functionaltests/test_muc.c b/tests/functionaltests/test_muc.c
index a6a17bd8..f95aec77 100644
--- a/tests/functionaltests/test_muc.c
+++ b/tests/functionaltests/test_muc.c
@@ -146,7 +146,7 @@ shows_history_message(void **state)
             "<x xmlns='jabber:x:delay' stamp='20151219T23:55:25'/>"
         "</message>"
     );
-    sleep(1);
+    sleep(2);
 
     assert_true(prof_output_regex("testoccupant:.*an old message"));
 }