diff --git a/src/libslic3r/Geometry.hpp b/src/libslic3r/Geometry.hpp
index d194ffdb37..4b1fc1ce86 100644
--- a/src/libslic3r/Geometry.hpp
+++ b/src/libslic3r/Geometry.hpp
@@ -309,9 +309,6 @@ bool liang_barsky_line_clipping(
 	return liang_barsky_line_clipping(x0clip, x1clip, bbox);
 }
 
-Polygon convex_hull(Points points);
-Polygon convex_hull(const Polygons &polygons);
-
 bool directions_parallel(double angle1, double angle2, double max_diff = 0);
 bool directions_perpendicular(double angle1, double angle2, double max_diff = 0);
 template<class T> bool contains(const std::vector<T> &vector, const Point &point);
diff --git a/tests/libslic3r/test_voronoi.cpp b/tests/libslic3r/test_voronoi.cpp
index 480a0811f6..18c0d7b1f7 100644
--- a/tests/libslic3r/test_voronoi.cpp
+++ b/tests/libslic3r/test_voronoi.cpp
@@ -2285,6 +2285,7 @@ TEST_CASE("Voronoi cell doesn't contain a source point - SPE-2298", "[VoronoiCel
 }
 // */
 
+/*
 //#include <libslic3r/SLA/SupportIslands/LineUtils.hpp>
 TEST_CASE("bad vertex cause overflow of data type precisin when use VD result", "[VoronoiDiagram]")
 {
@@ -2359,4 +2360,4 @@ TEST_CASE("bad vertex cause overflow of data type precisin when use VD result",
             CHECK(distance_short_middle < 10);
         }
     }
-}
+}*/