1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_hir_def/src/docs.rs b/crates/ra_hir_def/src/docs.rs
index 3fc6d6934..61727bd26 100644
--- a/crates/ra_hir_def/src/docs.rs
+++ b/crates/ra_hir_def/src/docs.rs
@@ -60,7 +60,7 @@ impl Documentation {
                 docs_from_ast(&src.value[it.local_id])
             }
             AttrDefId::TraitId(it) => docs_from_ast(&it.source(db).value),
-            AttrDefId::MacroDefId(it) => docs_from_ast(&it.ast_id.to_node(db)),
+            AttrDefId::MacroDefId(it) => docs_from_ast(&it.ast_id?.to_node(db)),
             AttrDefId::ConstId(it) => docs_from_ast(&it.lookup(db).source(db).value),
             AttrDefId::StaticId(it) => docs_from_ast(&it.lookup(db).source(db).value),
             AttrDefId::FunctionId(it) => docs_from_ast(&it.lookup(db).source(db).value),