diff --git a/meta-tests.txt b/meta-tests.txt
index 1762ded..de6e30f 100644
--- a/meta-tests.txt
+++ b/meta-tests.txt
@@ -1,2 +1,3 @@
 base
 subshell-simple
+subshell-undeclared
diff --git a/meta-tests/subshell-undeclared.sh b/meta-tests/subshell-undeclared.sh
new file mode 100755
index 0000000..da66a32
--- /dev/null
+++ b/meta-tests/subshell-undeclared.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+bash << "EOF"
+source ./run-basic-tests
+if ! (( FAIL )); then
+    exit 1
+fi
+EOF