diff --git a/crates/ra_parser/src/grammar/expressions.rs b/crates/ra_parser/src/grammar/expressions.rs
index 795dccea152..2ae05521c44 100644
--- a/crates/ra_parser/src/grammar/expressions.rs
+++ b/crates/ra_parser/src/grammar/expressions.rs
@@ -583,3 +583,8 @@ pub(crate) fn named_field_list(p: &mut Parser) {
     p.expect(T!['}']);
     m.complete(p, NAMED_FIELD_LIST);
 }
+
+// test box_syntax
+// fn foo() {
+//     let x = box 1i32;
+// }
diff --git a/crates/ra_syntax/tests/data/parser/inline/ok/0132_box_syntax.rs b/crates/ra_syntax/tests/data/parser/inline/ok/0132_box_syntax.rs
new file mode 100644
index 00000000000..e69c81e22a9
--- /dev/null
+++ b/crates/ra_syntax/tests/data/parser/inline/ok/0132_box_syntax.rs
@@ -0,0 +1,3 @@
+fn foo() {
+    let x = box 1i32;
+}