1 files changed, 1 insertions, 1 deletions
diff --git a/src/doc_reform/output/hub.d b/src/doc_reform/output/hub.d
index a32bd9e..1f01dd6 100644
--- a/src/doc_reform/output/hub.d
+++ b/src/doc_reform/output/hub.d
@@ -9,7 +9,7 @@ template outputHub() {
     doc_reform.output.create_zip_file,
     doc_reform.output.paths_output;
   import std.parallelism;
-  void outputHub(D,I)(D doc_abstraction, I doc_matters) {
+  void outputHub(D,I)(const D doc_abstraction, I doc_matters) {
     mixin DocReformOutputRgxInit;
     mixin Msg;
     auto msg = Msg!()(doc_matters);