diff --git a/crates/ra_ide/src/ide_db/mod.rs b/crates/ra_ide/src/ide_db/mod.rs
new file mode 100644
index 0000000000..8b13789179
--- /dev/null
+++ b/crates/ra_ide/src/ide_db/mod.rs
@@ -0,0 +1 @@
+
diff --git a/crates/ra_ide/src/lib.rs b/crates/ra_ide/src/lib.rs
index 03ad6b2c13..f10c871b8a 100644
--- a/crates/ra_ide/src/lib.rs
+++ b/crates/ra_ide/src/lib.rs
@@ -10,6 +10,8 @@
 // For proving that RootDatabase is RefUnwindSafe.
 #![recursion_limit = "128"]
 
+mod ide_db;
+
 mod db;
 pub mod mock_analysis;
 mod symbol_index;