diff --git a/test/Makefile b/test/Makefile
index 00d63a1..02c8c01 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -11,7 +11,7 @@ test: $(T)
 	$(MAKE) clean
 
 $(T):
-	$(SHELL) $@ $(TEST_OPTS)
+	./$@ $(TEST_OPTS)
 
 clean:
 	$(RM) -r 'trash directory'.* test-results
diff --git a/test/bidi.t b/test/bidi.t
index b6d2bbb..cdbe07f 100755
--- a/test/bidi.t
+++ b/test/bidi.t
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Copyright (c) 2012 Felipe Contreras
 #
diff --git a/test/hg-git.t b/test/hg-git.t
index 1a80938..7d0fc4a 100755
--- a/test/hg-git.t
+++ b/test/hg-git.t
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Copyright (c) 2012 Felipe Contreras
 #
diff --git a/test/main.t b/test/main.t
index 8fd35fe..dccec35 100755
--- a/test/main.t
+++ b/test/main.t
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Copyright (c) 2012 Felipe Contreras
 #
diff --git a/test/test-lib.sh b/test/test-lib.sh
index 727083e..b0d6580 100644
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 : "${SHARNESS_TEST_SRCDIR:=$(cd "$(dirname "${BASH_SOURCE-$0}")" && pwd)}"
 . "$SHARNESS_TEST_SRCDIR"/sharness.sh