2 files changed, 4 insertions, 1 deletions

diff --git a/crates/ra_ide_api/src/change.rs b/crates/ra_ide_api/src/change.rs
index 0f692460d..84340aff8 100644
--- a/crates/ra_ide_api/src/change.rs
+++ b/crates/ra_ide_api/src/change.rs
@@ -171,7 +171,7 @@ impl RootDatabase {
         log::info!("apply_change {:?}", change);
         {
             let _p = profile("RootDatabase::apply_change/cancellation");
-            self.salsa_runtime().synthetic_write(Durability::LOW);
+            self.salsa_runtime_mut().synthetic_write(Durability::LOW);
         }
         if !change.new_roots.is_empty() {
             let mut local_roots = Vec::clone(&self.local_roots());
diff --git a/crates/ra_ide_api/src/db.rs b/crates/ra_ide_api/src/db.rs
index c2a9dcdd1..f739ebecd 100644
--- a/crates/ra_ide_api/src/db.rs
+++ b/crates/ra_ide_api/src/db.rs
@@ -65,6 +65,9 @@ impl salsa::Database for RootDatabase {
     fn salsa_runtime(&self) -> &salsa::Runtime<RootDatabase> {
         &self.runtime
     }
+    fn salsa_runtime_mut(&mut self) -> &mut salsa::Runtime<Self> {
+        &mut self.runtime
+    }
     fn on_propagated_panic(&self) -> ! {
         Canceled::throw()
     }