diff --git a/src/test/test_bt_cl.c b/src/test/test_bt_cl.c
index 0fa0cd5c0a..01c621eb0e 100644
--- a/src/test/test_bt_cl.c
+++ b/src/test/test_bt_cl.c
@@ -5,6 +5,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+/* To prevent 'assert' from going away. */
+#undef TOR_COVERAGE
 #include "or.h"
 #include "util.h"
 #include "backtrace.h"