1 files changed, 1 insertions, 1 deletions

diff --git a/crates/hir_expand/src/diagnostics.rs b/crates/hir_expand/src/diagnostics.rs
index 78ccc212c..1043c6aeb 100644
--- a/crates/hir_expand/src/diagnostics.rs
+++ b/crates/hir_expand/src/diagnostics.rs
@@ -20,7 +20,7 @@ use syntax::SyntaxNodePtr;
 
 use crate::InFile;
 
-#[derive(Copy, Clone, PartialEq)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 pub struct DiagnosticCode(pub &'static str);
 
 impl DiagnosticCode {