diff --git a/src/test/ui/lint/unused/unused-macros-malformed-rule.rs b/src/test/ui/lint/unused/unused-macros-malformed-rule.rs
new file mode 100644
index 0000000000000..d4c35fad9b0f0
--- /dev/null
+++ b/src/test/ui/lint/unused/unused-macros-malformed-rule.rs
@@ -0,0 +1,15 @@
+#![deny(unused_macros)]
+
+macro_rules! foo { //~ ERROR: unused macro definition
+    (v) => {};
+    () => 0; //~ ERROR: macro rhs must be delimited
+}
+
+macro_rules! bar {
+    (v) => {};
+    () => 0; //~ ERROR: macro rhs must be delimited
+}
+
+fn main() {
+    bar!(v);
+}
diff --git a/src/test/ui/lint/unused/unused-macros-malformed-rule.stderr b/src/test/ui/lint/unused/unused-macros-malformed-rule.stderr
new file mode 100644
index 0000000000000..9a880dccfbf6d
--- /dev/null
+++ b/src/test/ui/lint/unused/unused-macros-malformed-rule.stderr
@@ -0,0 +1,26 @@
+error: macro rhs must be delimited
+  --> $DIR/unused-macros-malformed-rule.rs:5:11
+   |
+LL |     () => 0;
+   |           ^
+
+error: macro rhs must be delimited
+  --> $DIR/unused-macros-malformed-rule.rs:10:11
+   |
+LL |     () => 0;
+   |           ^
+
+error: unused macro definition: `foo`
+  --> $DIR/unused-macros-malformed-rule.rs:3:14
+   |
+LL | macro_rules! foo {
+   |              ^^^
+   |
+note: the lint level is defined here
+  --> $DIR/unused-macros-malformed-rule.rs:1:9
+   |
+LL | #![deny(unused_macros)]
+   |         ^^^^^^^^^^^^^
+
+error: aborting due to 3 previous errors
+