diff --git a/src/emit/mod.rs b/src/emit/mod.rs
index 1dbc42aee..adda7fa43 100644
--- a/src/emit/mod.rs
+++ b/src/emit/mod.rs
@@ -372,7 +372,7 @@ impl ast::Contract {
         context: &'a inkwell::context::Context,
         opt: &'a Options,
         contract_no: usize,
-    ) -> binary::Binary {
+    ) -> binary::Binary<'a> {
         binary::Binary::build(context, self, ns, opt, contract_no)
     }
 
diff --git a/src/sema/builtin_structs.rs b/src/sema/builtin_structs.rs
index 3ab24525f..ecb90075a 100644
--- a/src/sema/builtin_structs.rs
+++ b/src/sema/builtin_structs.rs
@@ -240,7 +240,7 @@ pub static BUILTIN_STRUCTS: Lazy<[BuiltinStructDeclaration; 3]> = Lazy::new(|| {
 });
 
 impl StructType {
-    pub fn definition<'a>(&'a self, ns: &'a Namespace) -> &StructDecl {
+    pub fn definition<'a>(&'a self, ns: &'a Namespace) -> &'a StructDecl {
         match self {
             StructType::UserDefined(struct_no) => &ns.structs[*struct_no],
             StructType::AccountInfo => &BUILTIN_STRUCTS[0].struct_decl,