1 files changed, 3 insertions, 0 deletions

diff --git a/crates/hir_def/src/diagnostics.rs b/crates/hir_def/src/diagnostics.rs
index 2e38a978f..c7723de00 100644
--- a/crates/hir_def/src/diagnostics.rs
+++ b/crates/hir_def/src/diagnostics.rs
@@ -15,6 +15,9 @@ pub struct UnresolvedModule {
 }
 
 impl Diagnostic for UnresolvedModule {
+    fn name(&self) -> &'static str {
+        "unresolved-module"
+    }
     fn message(&self) -> String {
         "unresolved module".to_string()
     }