diff --git a/src/libslic3r/TreeSupport.cpp b/src/libslic3r/TreeSupport.cpp
index c91824c66..f08d86d9e 100644
--- a/src/libslic3r/TreeSupport.cpp
+++ b/src/libslic3r/TreeSupport.cpp
@@ -2040,7 +2040,7 @@ void TreeSupport::increaseAreas(std::unordered_map<SupportElement, Polygons>& to
 
                 if (result)
                 {
-                    elem = result.value();
+                    elem = *result;
                     radius = m_config.getCollisionRadius(elem);
                     elem.last_area_increase = settings;
                     add = true;