diff --git a/tests/test-fuzz-targets.t b/tests/test-fuzz-targets.t
--- a/tests/test-fuzz-targets.t
+++ b/tests/test-fuzz-targets.t
@@ -41,3 +41,6 @@ Just run the fuzzers for five seconds ea
   $ ./bdiff -max_total_time 5
   $ ./mpatch -max_total_time 5
   $ ./xdiff -max_total_time 5
+
+Clean up.
+  $ $MAKE -s clean