diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index e920256e57..1a33127fa6 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -210,11 +210,11 @@ impl Module {
     pub fn declaration_source(
         self,
         db: &(impl DefDatabase + AstDatabase),
-    ) -> Option<(HirFileId, TreeArc<ast::Module>)> {
+    ) -> Option<Source<TreeArc<ast::Module>>> {
         let def_map = db.crate_def_map(self.krate);
         let decl = def_map[self.module_id].declaration?;
         let ast = decl.to_node(db);
-        Some((decl.file_id(), ast))
+        Some((decl.file_id(), ast).into())
     }
 
     /// Returns the syntax of the last path segment corresponding to this import
diff --git a/crates/ra_hir/src/docs.rs b/crates/ra_hir/src/docs.rs
index ae82d55a53..4db066c438 100644
--- a/crates/ra_hir/src/docs.rs
+++ b/crates/ra_hir/src/docs.rs
@@ -71,7 +71,7 @@ pub(crate) fn documentation_query(
     def: DocDef,
 ) -> Option<Documentation> {
     match def {
-        DocDef::Module(it) => docs_from_ast(&*it.declaration_source(db)?.1),
+        DocDef::Module(it) => docs_from_ast(&*it.declaration_source(db)?.ast),
         DocDef::StructField(it) => match it.source(db).ast {
             FieldSource::Named(named) => docs_from_ast(&*named),
             FieldSource::Pos(..) => return None,
diff --git a/crates/ra_ide_api/src/display/navigation_target.rs b/crates/ra_ide_api/src/display/navigation_target.rs
index 4a92be7105..d7687e1a4a 100644
--- a/crates/ra_ide_api/src/display/navigation_target.rs
+++ b/crates/ra_ide_api/src/display/navigation_target.rs
@@ -149,15 +149,15 @@ impl NavigationTarget {
 
     pub(crate) fn from_module_to_decl(db: &RootDatabase, module: hir::Module) -> NavigationTarget {
         let name = module.name(db).map(|it| it.to_string().into()).unwrap_or_default();
-        if let Some((file_id, source)) = module.declaration_source(db) {
-            let file_id = file_id.as_original_file();
+        if let Some(src) = module.declaration_source(db) {
+            let file_id = src.file_id.as_original_file();
             return NavigationTarget::from_syntax(
                 file_id,
                 name,
                 None,
-                source.syntax(),
-                source.doc_comment_text(),
-                source.short_label(),
+                src.ast.syntax(),
+                src.ast.doc_comment_text(),
+                src.ast.short_label(),
             );
         }
         NavigationTarget::from_module(db, module)