diff --git a/src/libslic3r/TreeSupport.cpp b/src/libslic3r/TreeSupport.cpp
index 335af79f60..c96171ac62 100644
--- a/src/libslic3r/TreeSupport.cpp
+++ b/src/libslic3r/TreeSupport.cpp
@@ -27,7 +27,7 @@
 
 // #define SUPPORT_TREE_DEBUG_TO_SVG
 
-#if SUPPORT_TREE_DEBUG_TO_SVG
+#ifdef SUPPORT_TREE_DEBUG_TO_SVG
 #include "nlohmann/json.hpp"
 #endif
 namespace Slic3r
@@ -3036,7 +3036,7 @@ void TreeSupport::smooth_nodes(std::vector<std::vector<Node *>> &contact_nodes)
             }
         }
     }
-#if SUPPORT_TREE_DEBUG_TO_SVG
+#ifdef SUPPORT_TREE_DEBUG_TO_SVG
     // save tree structure for viewing in python
     struct TreeNode {
         Vec3f pos;
diff --git a/src/slic3r/GUI/Jobs/ArrangeJob.cpp b/src/slic3r/GUI/Jobs/ArrangeJob.cpp
index da55f3eae1..9e3edaa248 100644
--- a/src/slic3r/GUI/Jobs/ArrangeJob.cpp
+++ b/src/slic3r/GUI/Jobs/ArrangeJob.cpp
@@ -511,7 +511,7 @@ void ArrangeJob::process()
     auto& print = wxGetApp().plater()->get_partplate_list().get_current_fff_print();
 
     if (params.is_seq_print)
-        params.min_obj_distance = std::max(params.min_obj_distance, scaled(params.cleareance_radius));
+        params.min_obj_distance = std::max(params.min_obj_distance, scaled(params.cleareance_radius + 0.001)); // +0.001mm to avoid clearance check fail due to rounding error
 
     if (params.avoid_extrusion_cali_region && print.full_print_config().opt_bool("scan_first_layer"))
         partplate_list.preprocess_nonprefered_areas(m_unselected, MAX_NUM_PLATES);