diff --git a/tests/ll-smoke-singlethreaded.sh b/tests/ll-smoke-singlethreaded.sh
index c7cbfc3..3fe5bf9 100755
--- a/tests/ll-smoke-singlethreaded.sh
+++ b/tests/ll-smoke-singlethreaded.sh
@@ -1,4 +1,4 @@
-!/bin/bash
+#!/bin/sh
 
 # Singlethreaded ll-smoke test.
 #