diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 5f341cf7e6f..464e1516ac3 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -10337,8 +10337,8 @@ std::optional<PreferredSeamPoint> GCode::texture_mapping_seam_hiding_hint(const
         };
 
         for (size_t point_idx = 1; point_idx < points.size(); ++point_idx) {
-            const Point &a = points[point_idx - 1];
-            const Point &b = points[point_idx];
+            const Point3 &a = points[point_idx - 1];
+            const Point3 &b = points[point_idx];
             const double len_mm = unscale<double>((b - a).cast<double>().norm());
             if (len_mm <= EPSILON)
                 continue;