diff --git a/tests/t_datadir b/tests/t_datadir
index 116ae7e..327e5b5 100755
--- a/tests/t_datadir
+++ b/tests/t_datadir
@@ -1 +1 @@
-#!/bin/sh
+#!/bin/bash
diff --git a/tests/t_list b/tests/t_list
index 42ae137..62e52fd 100755
--- a/tests/t_list
+++ b/tests/t_list
@@ -1 +1 @@
-#!/bin/sh
+#!/bin/bash
diff --git a/tests/t_utf8input b/tests/t_utf8input
index 7ae88c4..e692ab0 100755
--- a/tests/t_utf8input
+++ b/tests/t_utf8input
@@ -1 +1 @@
-#!/bin/sh
+#!/bin/bash