diff --git a/systemtap-static-probes-in-ruby/runtest.sh b/systemtap-static-probes-in-ruby/runtest.sh
index e75035f..af0e14f 100755
--- a/systemtap-static-probes-in-ruby/runtest.sh
+++ b/systemtap-static-probes-in-ruby/runtest.sh
@@ -87,7 +87,7 @@ rlJournalStart
         rlRun "$RUBY $RUBY_OPTS -e '(1..10).step(1)'" 0 "Running ruby interpreter: Range test"
         rlRun "$RUBY $RUBY_OPTS -e 'Hash.new()'" 0 "Running ruby interpreter: Hash test"
         rlRun "$RUBY $RUBY_OPTS -e '\"abc\".slice!(\"c\")'" 0 "Running ruby interpreter: String test"
-        rlRun "$RUBY $RUBY_OPTS -e '5.times { printf \"Ruby!\n\" }'" 0 "Running ruby interpreter: Cycle and print test"
+        rlRun "$RUBY $RUBY_OPTS -e 'TracePoint.new{}.enable; 5.times { printf \"Ruby!\n\" }'" 0 "Running ruby interpreter: Cycle and print test"
 
         # wait for all output
         rlRun "sleep 10" 0 "Waiting \"10\" seconds"