diff --git a/crates/libanalysis/src/db/mod.rs b/crates/libanalysis/src/db/mod.rs
index f68aab61c0f..3198272b7d6 100644
--- a/crates/libanalysis/src/db/mod.rs
+++ b/crates/libanalysis/src/db/mod.rs
@@ -120,38 +120,36 @@ impl<'a> QueryCtx<'a> {
 
 fn query_config() -> salsa::QueryConfig<State, Data> {
     let mut res = salsa::QueryConfig::new();
-    let queries: Vec<SalsaGroundQuery> = vec![
+    let queries: Vec<BoxedGroundQuery> = vec![
         queries::FILE_TEXT.into(),
         queries::FILE_SET.into(),
     ];
     for q in queries {
         res = res.with_ground_query(q.query_type, q.f)
     }
-    let queries: Vec<SalsaQuery> = vec![
+    let mut queries: Vec<BoxedQuery> = vec![
         queries::FILE_SYNTAX.into(),
-        ::module_map_db::MODULE_DESCR.into(),
-        ::module_map_db::RESOLVE_SUBMODULE.into(),
-        ::module_map_db::PARENT_MODULE.into(),
     ];
+    ::module_map_db::queries(&mut queries);
     for q in queries {
         res = res.with_query(q.query_type, q.f);
     }
     res
 }
 
-struct SalsaGroundQuery {
+struct BoxedGroundQuery {
     query_type: salsa::QueryTypeId,
     f: Box<Fn(&State, &Data) -> (Data, salsa::OutputFingerprint) + Send + Sync + 'static>,
 }
 
-impl<T, R> From<GroundQuery<T, R>> for SalsaGroundQuery
+impl<T, R> From<GroundQuery<T, R>> for BoxedGroundQuery
 where
     T: Send + Sync + 'static,
     R: Send + Sync + 'static,
 {
-    fn from(q: GroundQuery<T, R>) -> SalsaGroundQuery
+    fn from(q: GroundQuery<T, R>) -> BoxedGroundQuery
     {
-        SalsaGroundQuery {
+        BoxedGroundQuery {
             query_type: salsa::QueryTypeId(q.id),
             f: Box::new(move |state, data| {
                 let data: &T = data.downcast_ref().unwrap();
@@ -163,19 +161,19 @@ where
     }
 }
 
-struct SalsaQuery {
+pub(crate) struct BoxedQuery {
     query_type: salsa::QueryTypeId,
     f: Box<Fn(&salsa::QueryCtx<State, Data>, &Data) -> (Data, salsa::OutputFingerprint) + Send + Sync + 'static>,
 }
 
-impl<T, R> From<Query<T, R>> for SalsaQuery
+impl<T, R> From<Query<T, R>> for BoxedQuery
 where
     T: Hash + Send + Sync + 'static,
     R: Hash + Send + Sync + 'static,
 {
-    fn from(q: Query<T, R>) -> SalsaQuery
+    fn from(q: Query<T, R>) -> BoxedQuery
     {
-        SalsaQuery {
+        BoxedQuery {
             query_type: salsa::QueryTypeId(q.id),
             f: Box::new(move |ctx, data| {
                 let ctx = QueryCtx { inner: ctx };
diff --git a/crates/libanalysis/src/module_map_db/descr.rs b/crates/libanalysis/src/module_map_db/descr.rs
new file mode 100644
index 00000000000..fb298a315d8
--- /dev/null
+++ b/crates/libanalysis/src/module_map_db/descr.rs
@@ -0,0 +1,29 @@
+use libsyntax2::{
+    SmolStr,
+    ast::{self, NameOwner},
+};
+
+#[derive(Debug, Hash)]
+pub struct ModuleDescr {
+    pub submodules: Vec<Submodule>
+}
+
+impl ModuleDescr {
+    pub fn new(root: ast::Root) -> ModuleDescr {
+        let submodules = root
+            .modules()
+            .filter_map(|module| {
+                let name = module.name()?.text();
+                if !module.has_semi() {
+                    return None;
+                }
+                Some(Submodule { name })
+            }).collect();
+
+        ModuleDescr { submodules } }
+}
+
+#[derive(Clone, Hash, PartialEq, Eq, Debug)]
+pub struct Submodule {
+    pub name: SmolStr,
+}
diff --git a/crates/libanalysis/src/module_map_db.rs b/crates/libanalysis/src/module_map_db/mod.rs
similarity index 87%
rename from crates/libanalysis/src/module_map_db.rs
rename to crates/libanalysis/src/module_map_db/mod.rs
index ff69cc0d208..777f7a38ad4 100644
--- a/crates/libanalysis/src/module_map_db.rs
+++ b/crates/libanalysis/src/module_map_db/mod.rs
@@ -1,12 +1,20 @@
+mod descr;
+
 use std::sync::Arc;
 use {
     FileId,
     db::{
-        Query, QueryCtx
+        BoxedQuery, Query, QueryCtx
     },
     module_map::resolve_submodule,
 };
 
+pub(crate) fn queries(acc: &mut Vec<BoxedQuery>) {
+    acc.push(MODULE_DESCR.into());
+    acc.push(RESOLVE_SUBMODULE.into());
+    acc.push(PARENT_MODULE.into());
+}
+
 impl<'a> QueryCtx<'a> {
     fn module_descr(&self, file_id: FileId) -> Arc<descr::ModuleDescr> {
         self.get(MODULE_DESCR, file_id)
@@ -52,39 +60,6 @@ pub(crate) const PARENT_MODULE: Query<FileId, Vec<FileId>> = Query {
     }
 };
 
-mod descr {
-    use libsyntax2::{
-        SmolStr,
-        ast::{self, NameOwner},
-    };
-
-    #[derive(Debug, Hash)]
-    pub struct ModuleDescr {
-        pub submodules: Vec<Submodule>
-    }
-
-    impl ModuleDescr {
-        pub fn new(root: ast::Root) -> ModuleDescr {
-            let submodules = root
-                .modules()
-                .filter_map(|module| {
-                    let name = module.name()?.text();
-                    if !module.has_semi() {
-                        return None;
-                    }
-                    Some(Submodule { name })
-                }).collect();
-
-            ModuleDescr { submodules } }
-    }
-
-    #[derive(Clone, Hash, PartialEq, Eq, Debug)]
-    pub struct Submodule {
-        pub name: SmolStr,
-    }
-
-}
-
 #[cfg(test)]
 mod tests {
     use std::collections::HashMap;