diff --git a/crates/ra_assists/src/assist_ctx.rs b/crates/ra_assists/src/assist_ctx.rs
index 5f85f20e24..c527366791 100644
--- a/crates/ra_assists/src/assist_ctx.rs
+++ b/crates/ra_assists/src/assist_ctx.rs
@@ -1,4 +1,4 @@
-//! FIXME: write short doc here
+//! This module defines `AssistCtx` -- the API surface that is exposed to assists.
 
 use hir::db::HirDatabase;
 use ra_db::FileRange;