diff --git a/bin/sh/tests/builtins/Makefile b/bin/sh/tests/builtins/Makefile
index 1511f70eb863..4d94d94c5d37 100644
--- a/bin/sh/tests/builtins/Makefile
+++ b/bin/sh/tests/builtins/Makefile
@@ -112,6 +112,7 @@ FILES+=		local2.0
 FILES+=		local3.0
 FILES+=		local4.0
 FILES+=		local5.0
+FILES+=		local6.0
 .if ${MK_NLS} != "no"
 FILES+=		locale1.0
 .endif
diff --git a/bin/sh/tests/builtins/local6.0 b/bin/sh/tests/builtins/local6.0
new file mode 100644
index 000000000000..017bb1234c8c
--- /dev/null
+++ b/bin/sh/tests/builtins/local6.0
@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+f() {
+	local x
+	readonly x=2
+}
+x=3
+f
+x=4
+[ "$x" = 4 ]