diff --git a/t/Makefile b/t/Makefile
index e10d3e2..16dbba2 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -1,4 +1,4 @@
-SHELL_PATH ?= $(SHELL)
+SHELL_PATH ?= /bin/bash
 PROVE ?= prove
 DEFAULT_TEST_TARGET ?= test