1 files changed, 2 insertions, 1 deletions

diff --git a/crates/ra_mbe/src/tests.rs b/crates/ra_mbe/src/tests.rs
index 6d5d1e9e6..4d3140fa9 100644
--- a/crates/ra_mbe/src/tests.rs
+++ b/crates/ra_mbe/src/tests.rs
@@ -1430,7 +1430,8 @@ impl MacroFixture {
         let (invocation_tt, _) =
             ast_to_token_tree(&macro_invocation.token_tree().unwrap()).unwrap();
 
-        self.rules.expand(&invocation_tt)
+        let (tt, err) = self.rules.expand(&invocation_tt);
+        err.map(Err).unwrap_or(Ok(tt))
     }
 
     fn assert_expand_err(&self, invocation: &str, err: &ExpandError) {