diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 6059773d0a1..053b6ab777a 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -10399,7 +10399,7 @@ std::string GCode::extrude_loop(ExtrusionLoop loop, std::string description, dou
 
         // can happen if seam_gap is null
         if (next_point == current_point) {
-            next_point = paths.back().polyline.points[paths.back().polyline.points.size() - 2];
+            next_point = paths.back().polyline.points[paths.back().polyline.points.size() - 2].to_point();
         }
 
         Point a = next_point;  // second point