diff --git a/src/libseqarrange/include/seq_interface.hpp b/src/libseqarrange/include/seq_interface.hpp
index b1cdf0fa20..12b6730225 100644
--- a/src/libseqarrange/include/seq_interface.hpp
+++ b/src/libseqarrange/include/seq_interface.hpp
@@ -16,7 +16,7 @@
 /*----------------------------------------------------------------*/
 
 #include "libslic3r/Polygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 
 #include "seq_defs.hpp"
 
@@ -43,7 +43,7 @@ struct PrinterGeometry
     std::set<coord_t> convex_heights;
     std::set<coord_t> box_heights;
     
-    std::map<coord_t, std::vector<Polygon> > extruder_slices;
+    std::map<coord_t, std::vector<Slic3r::Polygon> > extruder_slices;
 };
 
     
@@ -106,7 +106,7 @@ struct ObjectToPrint
 {
     int id = 0;
     coord_t total_height = 0;
-    std::vector<std::pair<coord_t, Polygon>> pgns_at_height;
+    std::vector<std::pair<coord_t, Slic3r::Polygon>> pgns_at_height;
 };
 
 
diff --git a/src/libseqarrange/include/seq_sequential.hpp b/src/libseqarrange/include/seq_sequential.hpp
index 6a1f1a518a..3c2d2df691 100644
--- a/src/libseqarrange/include/seq_sequential.hpp
+++ b/src/libseqarrange/include/seq_sequential.hpp
@@ -25,7 +25,7 @@
 
 #include "libslic3r/Geometry.hpp"
 #include "libslic3r/ExPolygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 
 #include <z3++.h>
 
diff --git a/src/libseqarrange/src/sequential_decimator.cpp b/src/libseqarrange/src/sequential_decimator.cpp
index 2e69caca53..c184323187 100644
--- a/src/libseqarrange/src/sequential_decimator.cpp
+++ b/src/libseqarrange/src/sequential_decimator.cpp
@@ -15,7 +15,7 @@
 #include <fstream>
 
 #include "libslic3r/Polygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include "seq_version.hpp"
diff --git a/src/libseqarrange/src/sequential_prusa.cpp b/src/libseqarrange/src/sequential_prusa.cpp
index 43e9d43c24..f00bb66b62 100644
--- a/src/libseqarrange/src/sequential_prusa.cpp
+++ b/src/libseqarrange/src/sequential_prusa.cpp
@@ -11,7 +11,7 @@
 
 
 #include "libslic3r/Polygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include "seq_version.hpp"
diff --git a/src/libseqarrange/test/seq_test_interface.cpp b/src/libseqarrange/test/seq_test_interface.cpp
index e76cdf119e..e41187e33c 100644
--- a/src/libseqarrange/test/seq_test_interface.cpp
+++ b/src/libseqarrange/test/seq_test_interface.cpp
@@ -16,7 +16,7 @@
 
 #include "libslic3r/Polygon.hpp"
 #include "libslic3r/ExPolygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include <z3++.h>
diff --git a/src/libseqarrange/test/seq_test_polygon.cpp b/src/libseqarrange/test/seq_test_polygon.cpp
index b439464776..e8852d2696 100644
--- a/src/libseqarrange/test/seq_test_polygon.cpp
+++ b/src/libseqarrange/test/seq_test_polygon.cpp
@@ -15,7 +15,7 @@
 
 #include <vector>
 #include "libslic3r/ExPolygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include <z3++.h>
diff --git a/src/libseqarrange/test/seq_test_preprocess.cpp b/src/libseqarrange/test/seq_test_preprocess.cpp
index a296b5801e..899e8079fe 100644
--- a/src/libseqarrange/test/seq_test_preprocess.cpp
+++ b/src/libseqarrange/test/seq_test_preprocess.cpp
@@ -17,7 +17,7 @@
 
 #include <vector>
 #include "libslic3r/ExPolygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include <z3++.h>
diff --git a/src/libseqarrange/test/seq_test_sequential.cpp b/src/libseqarrange/test/seq_test_sequential.cpp
index 60382e34b1..595f22ac47 100644
--- a/src/libseqarrange/test/seq_test_sequential.cpp
+++ b/src/libseqarrange/test/seq_test_sequential.cpp
@@ -16,7 +16,7 @@
 
 #include <vector>
 #include "libslic3r/ExPolygon.hpp"
-#include "libslic3r/ConvexHull.hpp"
+#include "libslic3r/Geometry/ConvexHull.hpp"
 #include "libslic3r/SVG.hpp"
 
 #include <z3++.h>
diff --git a/src/slic3r/GUI/ArrangeHelper.cpp b/src/slic3r/GUI/ArrangeHelper.cpp
index f90ae679cd..aeedcf65be 100644
--- a/src/slic3r/GUI/ArrangeHelper.cpp
+++ b/src/slic3r/GUI/ArrangeHelper.cpp
@@ -6,7 +6,6 @@
 #include <string>
 
 #include "libseqarrange/include/seq_interface.hpp"
-#include "libseqarrange/include/seq_sequential.hpp"
 
 
 namespace Slic3r {
diff --git a/tests/slic3rutils/CMakeLists.txt b/tests/slic3rutils/CMakeLists.txt
index ac025ce46c..83c320ec22 100644
--- a/tests/slic3rutils/CMakeLists.txt
+++ b/tests/slic3rutils/CMakeLists.txt
@@ -8,7 +8,7 @@ add_executable(${_TEST_NAME}_tests
     )
 
 # mold linker for successful linking needs also to link TBB library and link it before libslic3r.
-target_link_libraries(${_TEST_NAME}_tests test_common TBB::tbb TBB::tbbmalloc libslic3r_gui libslic3r)
+target_link_libraries(${_TEST_NAME}_tests test_common TBB::tbb TBB::tbbmalloc libslic3r_gui libslic3r libseqarrange)
 
 if (MSVC)
     target_link_libraries(${_TEST_NAME}_tests Setupapi.lib)