diff --git a/compiler/can/tests/test_can.rs b/compiler/can/tests/test_can.rs
index 2ec45dac73..debc368151 100644
--- a/compiler/can/tests/test_can.rs
+++ b/compiler/can/tests/test_can.rs
@@ -433,7 +433,7 @@ mod test_can {
 
         assert_eq!(problems, Vec::new());
     }
-    
+
     // LOCALS
 
     // TODO rewrite this test to check only for UnusedDef reports
diff --git a/compiler/parse/src/ast.rs b/compiler/parse/src/ast.rs
index 78f6ab2346..7b9f50e41c 100644
--- a/compiler/parse/src/ast.rs
+++ b/compiler/parse/src/ast.rs
@@ -278,8 +278,8 @@ pub enum Def<'a> {
     Body(&'a Loc<Pattern<'a>>, &'a Loc<Expr<'a>>),
 
     AnnotatedBody {
-        ann_pattern: Loc<Pattern<'a>>,
-        ann_type: Loc<TypeAnnotation<'a>>,
+        ann_pattern: &'a Loc<Pattern<'a>>,
+        ann_type: &'a Loc<TypeAnnotation<'a>>,
         comment: Option<&'a str>,
         body_pattern: &'a Loc<Pattern<'a>>,
         body_expr: &'a Loc<Expr<'a>>,
diff --git a/compiler/parse/src/expr.rs b/compiler/parse/src/expr.rs
index 03006199d2..db50ce4ad5 100644
--- a/compiler/parse/src/expr.rs
+++ b/compiler/parse/src/expr.rs
@@ -516,8 +516,8 @@ fn to_def<'a>(
             (ann_pattern, ann_type),
             Some((opt_comment, (body_pattern, body_expr))),
         )) => Def::AnnotatedBody {
-            ann_pattern,
-            ann_type,
+            ann_pattern: arena.alloc(ann_pattern),
+            ann_type: arena.alloc(ann_type),
             comment: opt_comment,
             body_pattern: arena.alloc(body_pattern),
             body_expr: arena.alloc(body_expr),
@@ -854,8 +854,8 @@ fn parse_def_signature<'a>(
                             Region::span_across(&loc_first_pattern.region, &body_expr.region);
                         Located {
                             value: Def::AnnotatedBody {
-                                ann_pattern: loc_first_pattern,
-                                ann_type: loc_first_annotation,
+                                ann_pattern: arena.alloc(loc_first_pattern),
+                                ann_type: arena.alloc(loc_first_annotation),
                                 comment: opt_comment,
                                 body_pattern: arena.alloc(body_pattern),
                                 body_expr: arena.alloc(body_expr),