diff --git a/test/scripts/dk_9.py b/test/scripts/dk_9.py
index afe62be8024..02f3ad2425c 100644
--- a/test/scripts/dk_9.py
+++ b/test/scripts/dk_9.py
@@ -3,8 +3,8 @@
 
 rzp = rzpipe.open("bins/elf/analysis/calls_x64", flags=["-a", "x86", "-d", "-1"])
 expected = "child received signal 9"
-actual = rzp.cmd("")
-actual += rzp.cmd("wx ebfe; dk 9; dc")  # ebfe is infinite loop
+sys.stdout.write(rzp.cmd(""))  # should print nothing
+actual = rzp.cmd("wx ebfe; dk 9; dc")  # ebfe is infinite loop
 actual += rzp.cmd("")
 if expected in actual or "Process exited with status=0x9" in actual:
     sys.stderr.write(expected + "\n")