diff --git a/src/libslic3r/PrintApply.cpp b/src/libslic3r/PrintApply.cpp
index 12da0e88a..f729273e3 100644
--- a/src/libslic3r/PrintApply.cpp
+++ b/src/libslic3r/PrintApply.cpp
@@ -266,6 +266,15 @@ static t_config_option_keys print_config_diffs(
                 else if ((plate_index < option_new->values.size())||(plate_index < option_old->values.size()))
                     print_diff.emplace_back(opt_key);
             }
+            else if (opt_key == "unprintable_filament_map") {
+                size_t extruder_nums = new_full_config.option<ConfigOptionFloatsNullable>("nozzle_diameter")->values.size();
+                std::vector<std::vector<int>> old_map = current_config.option<ConfigOptionIntsGroups>("unprintable_filament_map")->values;
+                std::vector<std::vector<int>> new_map = new_full_config.option<ConfigOptionIntsGroups>("unprintable_filament_map")->values;
+                old_map.resize(extruder_nums, std::vector<int>());
+                new_map.resize(extruder_nums, std::vector<int>());
+                if (old_map != new_map)
+                    print_diff.emplace_back(opt_key);
+            }
             else
                 print_diff.emplace_back(opt_key);
         }
@@ -297,6 +306,18 @@ static t_config_option_keys full_print_config_diffs(const DynamicPrintConfig &cu
                 else if ((plate_index < option_new->values.size())||(plate_index < option_old->values.size()))
                     full_config_diff.emplace_back(opt_key);
             }
+            else if (opt_key == "unprintable_filament_map") {
+                size_t                        extruder_nums = new_full_config.option<ConfigOptionFloatsNullable>("nozzle_diameter")->values.size();
+                std::vector<std::vector<int>> old_map;
+                if (opt_old) {
+                    old_map = current_full_config.option<ConfigOptionIntsGroups>("unprintable_filament_map")->values;
+                }
+                std::vector<std::vector<int>> new_map  = new_full_config.option<ConfigOptionIntsGroups>("unprintable_filament_map")->values;
+                old_map.resize(extruder_nums, std::vector<int>());
+                new_map.resize(extruder_nums, std::vector<int>());
+                if (old_map != new_map)
+                    full_config_diff.emplace_back(opt_key);
+            }
             else
                 full_config_diff.emplace_back(opt_key);
         }