diff --git a/crates/ra_ide/src/syntax_highlighting/tests.rs b/crates/ra_ide/src/syntax_highlighting/tests.rs
index e9a6fbcdfe..facdc42b7a 100644
--- a/crates/ra_ide/src/syntax_highlighting/tests.rs
+++ b/crates/ra_ide/src/syntax_highlighting/tests.rs
@@ -389,6 +389,7 @@ fn main() {
         unsafe_fn();
         HasUnsafeFn.unsafe_method();
         let y = *x;
+        let z = -x;
     }
 }
 "#