1 files changed, 1 insertions, 0 deletions

diff --git a/crates/ra_hir/src/ty/traits.rs b/crates/ra_hir/src/ty/traits.rs
index e6c78c0d4..fc90f56d5 100644
--- a/crates/ra_hir/src/ty/traits.rs
+++ b/crates/ra_hir/src/ty/traits.rs
@@ -82,6 +82,7 @@ pub(crate) fn implements_query(
     krate: Crate,
     trait_ref: Canonical<TraitRef>,
 ) -> Option<Solution> {
+    db.check_canceled();
     let _p = profile("implements_query");
     let goal: chalk_ir::Goal = trait_ref.value.to_chalk(db).cast();
     debug!("goal: {:?}", goal);