diff --git a/go-runtime/compile/build.go b/go-runtime/compile/build.go
index 4a440fd2eb..1cfe7cebdb 100644
--- a/go-runtime/compile/build.go
+++ b/go-runtime/compile/build.go
@@ -521,7 +521,7 @@ var scaffoldFuncs = scaffolder.FuncMap{
 	},
 	"typeAliasType": func(m *schema.Module, t *schema.TypeAlias) string {
 		if _, goType := getGoExternalTypeForWidenedType(t); goType != "" {
-			return goType
+			return "= " + goType
 		}
 		return genType(m, t.Type)
 	},