diff --git a/libpkg/data/package.h b/libpkg/data/package.h
index e072d7f..d710b48 100644
--- a/libpkg/data/package.h
+++ b/libpkg/data/package.h
@@ -397,7 +397,7 @@ struct LIBPKG_EXPORT Package : public ReflectiveRapidJSON::JsonSerializable<Pack
 
     static std::vector<PackageSpec> fromInfo(const std::string &info, bool isPackageInfo = false);
     static std::shared_ptr<Package> fromDescription(const std::vector<std::string> &descriptionParts);
-    static void fromDatabaseFile(const std::string &archivePath, const std::function<bool(std::shared_ptr<Package>)> &visitor);
+    static void fromDatabaseFile(const std::string &archivePath, const std::function<bool(const std::shared_ptr<Package> &)> &visitor);
     static std::shared_ptr<Package> fromPkgFile(const std::string &path);
     static std::tuple<std::string_view, std::string_view, std::string_view> fileNameComponents(std::string_view fileName);
     static std::shared_ptr<Package> fromPkgFileName(std::string_view fileName);
diff --git a/libpkg/parser/package.cpp b/libpkg/parser/package.cpp
index 8e3b83e..8eb592a 100644
--- a/libpkg/parser/package.cpp
+++ b/libpkg/parser/package.cpp
@@ -716,7 +716,7 @@ std::shared_ptr<Package> Package::fromDescription(const std::vector<std::string>
     return package;
 }
 
-void Package::fromDatabaseFile(const std::string &archivePath, const std::function<bool(std::shared_ptr<Package>)> &visitor)
+void Package::fromDatabaseFile(const std::string &archivePath, const std::function<bool(const std::shared_ptr<Package> &)> &visitor)
 {
     // walk though archive, file-by-file; parse files as soon as desc/files available and return via visitor
     auto packages = std::unordered_map<std::string, std::vector<std::string>>();