diff --git a/compiler/builtins/src/unique.rs b/compiler/builtins/src/unique.rs
index bdf5cf22e1..d8947c60ae 100644
--- a/compiler/builtins/src/unique.rs
+++ b/compiler/builtins/src/unique.rs
@@ -783,9 +783,9 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
         )
     });
 
-    // map : Attr * (List a)
+    // keepIf : Attr * (List a)
     //     , Attr Shared (a -> Attr * Bool)
-    //    -> Attr * (List b)
+    //    -> Attr * (List a)
     add_type(Symbol::LIST_KEEP_IF, {
         let_tvars! { a, star1, star2, star3 };
 
diff --git a/compiler/gen/src/llvm/build_list.rs b/compiler/gen/src/llvm/build_list.rs
index abe66c131e..9ad485e540 100644
--- a/compiler/gen/src/llvm/build_list.rs
+++ b/compiler/gen/src/llvm/build_list.rs
@@ -495,7 +495,7 @@ pub fn list_get_unsafe<'a, 'ctx, 'env>(
     }
 }
 
-/// List.push List elem, elem -> List elem
+/// List.append : List elem, elem -> List elem
 pub fn list_append<'a, 'ctx, 'env>(
     env: &Env<'a, 'ctx, 'env>,
     original_wrapper: StructValue<'ctx>,