diff --git a/tests/issue205/err.asm b/tests/issue205/err.asm
new file mode 100644
index 0000000..568044e
--- /dev/null
+++ b/tests/issue205/err.asm
@@ -0,0 +1,18 @@
+#subruledef foo
+{
+    f{i:u4} => i
+}
+
+
+#ruledef bar
+{
+    [{f:foo}] => 0xa @ f
+    [{i:u4}]  => 0xb @ i
+}
+
+
+foo:
+bar:
+    [f10]
+    [bar] 
+    [foo] ; error: failed / note:_:9: within / note:_:3: within / error: unknown symbol `oo`
\ No newline at end of file