diff --git a/src/source_package_publishing_history.cpp b/src/source_package_publishing_history.cpp
index ddcd892..96b67b1 100644
--- a/src/source_package_publishing_history.cpp
+++ b/src/source_package_publishing_history.cpp
@@ -37,7 +37,7 @@ source_package_publishing_history::source_package_publishing_history()
 
           if (ds) {
               ds->set_lp(lp);
-              _distro_series = ds;
+              _distro_series = std::make_optional(ds.value());
               return ds;
           }