diff --git a/src/libslic3r/Fill/FillAdaptive.cpp b/src/libslic3r/Fill/FillAdaptive.cpp
index f1fa56c5bd..3b9212230d 100644
--- a/src/libslic3r/Fill/FillAdaptive.cpp
+++ b/src/libslic3r/Fill/FillAdaptive.cpp
@@ -435,7 +435,7 @@ std::unique_ptr<FillAdaptive_Internal::Octree> FillSupportCubic::build_octree(
     auto octree = std::make_unique<Octree>(std::make_unique<Cube>(cube_center), cube_center, cubes_properties);
 
     double cube_edge_length = line_spacing / 2.0;
-    size_t max_depth = octree->cubes_properties.size() - 1;
+    int max_depth = int(octree->cubes_properties.size()) - 1;
     BoundingBoxf3 mesh_bb = triangle_mesh.bounding_box();
     Vec3f vertical(0, 0, 1);
 
@@ -462,13 +462,13 @@ std::unique_ptr<FillAdaptive_Internal::Octree> FillSupportCubic::build_octree(
         Vec3d triangle_end_relative   = triangle_bb.max - mesh_bb.min;
 
         Vec3crd triangle_start_idx = Vec3crd(
-            std::floor(triangle_start_relative.x() / cube_edge_length),
-            std::floor(triangle_start_relative.y() / cube_edge_length),
-            std::floor(triangle_start_relative.z() / cube_edge_length));
+            int(std::floor(triangle_start_relative.x() / cube_edge_length)),
+            int(std::floor(triangle_start_relative.y() / cube_edge_length)),
+            int(std::floor(triangle_start_relative.z() / cube_edge_length)));
         Vec3crd triangle_end_idx = Vec3crd(
-            std::floor(triangle_end_relative.x() / cube_edge_length),
-            std::floor(triangle_end_relative.y() / cube_edge_length),
-            std::floor(triangle_end_relative.z() / cube_edge_length));
+            int(std::floor(triangle_end_relative.x() / cube_edge_length)),
+            int(std::floor(triangle_end_relative.y() / cube_edge_length)),
+            int(std::floor(triangle_end_relative.z() / cube_edge_length)));
 
         for (int z = triangle_start_idx.z(); z <= triangle_end_idx.z(); ++z)
         {
diff --git a/src/libslic3r/PrintObject.cpp b/src/libslic3r/PrintObject.cpp
index 2df7994eef..e2dba5bb2a 100644
--- a/src/libslic3r/PrintObject.cpp
+++ b/src/libslic3r/PrintObject.cpp
@@ -377,7 +377,7 @@ void PrintObject::infill()
         BOOST_LOG_TRIVIAL(debug) << "Filling layers in parallel - start";
         tbb::parallel_for(
             tbb::blocked_range<size_t>(0, m_layers.size()),
-            [this, &adaptive_fill_octree, &support_fill_octree](const tbb::blocked_range<size_t>& range) {
+            [this, &adaptive_fill_octree = adaptive_fill_octree, &support_fill_octree = support_fill_octree](const tbb::blocked_range<size_t>& range) {
                 for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
                     m_print->throw_if_canceled();
                     m_layers[layer_idx]->make_fills(adaptive_fill_octree.get(), support_fill_octree.get());