diff --git a/test/run-tests.sh b/test/run-tests.sh
index 5bc5c1413352ea5d3a8e948ee74e777bc77657b7..c46010e9eceeb750ed141d67d632efe13fe0573b 100755
--- a/test/run-tests.sh
+++ b/test/run-tests.sh
@@ -1,4 +1,4 @@
-#!/bin/sh -x
+#!/bin/sh
 
 # run-tests {lisp invocation} {scripts-regex}
 # - read lisp forms one at a time from standard input