2 files changed, 3 insertions, 3 deletions
diff --git a/src/buildtool/build_engine/expression/configuration.hpp b/src/buildtool/build_engine/expression/configuration.hpp
index 3306d293..c19baa01 100644
--- a/src/buildtool/build_engine/expression/configuration.hpp
+++ b/src/buildtool/build_engine/expression/configuration.hpp
@@ -16,8 +16,8 @@ class Configuration {
         : expr_{std::move(expr)} {
         gsl_ExpectsAudit(expr_->IsMap());
     }
-    explicit Configuration(Expression::map_t const& map) noexcept
-        : expr_{ExpressionPtr{map}} {}
+    explicit Configuration(Expression::map_t&& map) noexcept
+        : expr_{ExpressionPtr{std::move(map)}} {}
 
     Configuration() noexcept = default;
     ~Configuration() noexcept = default;
diff --git a/src/buildtool/build_engine/expression/linked_map.hpp b/src/buildtool/build_engine/expression/linked_map.hpp
index 6266c2ce..59361dcf 100644
--- a/src/buildtool/build_engine/expression/linked_map.hpp
+++ b/src/buildtool/build_engine/expression/linked_map.hpp
@@ -111,7 +111,7 @@ class LinkedMap {
     }
 
     LinkedMap() noexcept = default;
-    LinkedMap(LinkedMap const& other) noexcept = default;
+    LinkedMap(LinkedMap const& other) noexcept = delete;
     LinkedMap(LinkedMap&& other) noexcept = default;
     ~LinkedMap() noexcept = default;