diff --git a/src/utils/Simplify.cpp b/src/utils/Simplify.cpp
index 802faa88c6..19ec8f04a4 100644
--- a/src/utils/Simplify.cpp
+++ b/src/utils/Simplify.cpp
@@ -18,7 +18,7 @@ Simplify::Simplify(const coord_t max_resolution, const coord_t max_deviation, co
 Simplify::Simplify(const Settings& settings)
     : max_resolution(settings.get<coord_t>("meshfix_maximum_resolution"))
     , max_deviation(settings.get<coord_t>("meshfix_maximum_deviation"))
-    , max_area_deviation(settings.get<coord_t>("meshfix_maximum_extrusion_area_deviation"))
+    , max_area_deviation(settings.get<size_t>("meshfix_maximum_extrusion_area_deviation"))
 {}
 
 Polygons Simplify::polygon(const Polygons& polygons) const