diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index c13d7720e3754..b4f7a9fa8e9d6 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -599,7 +599,7 @@ rustc_queries! {
         desc { "computing the inferred outlives predicates for items in this crate" }
     }
 
-    /// Maps from an impl/trait `DefId to a list of the `DefId`s of its items.
+    /// Maps from an impl/trait `DefId` to a list of the `DefId`s of its items.
     query associated_item_def_ids(key: DefId) -> &'tcx [DefId] {
         desc { |tcx| "collecting associated items of `{}`", tcx.def_path_str(key) }
     }