diff --git a/src/libslic3r/MultiMaterialSegmentation.cpp b/src/libslic3r/MultiMaterialSegmentation.cpp
index 148fdc9921..fee189047e 100644
--- a/src/libslic3r/MultiMaterialSegmentation.cpp
+++ b/src/libslic3r/MultiMaterialSegmentation.cpp
@@ -837,10 +837,11 @@ static void cut_segmented_layers(const std::vector<ExPolygons>        &input_exp
 {
     BOOST_LOG_TRIVIAL(debug) << "MM segmentation - cutting segmented layers in parallel - begin";
     const float interlocking_cut_width = interlocking_depth > 0.f ? std::max(cut_width - interlocking_depth, 0.f) : 0.f;
-    tbb::parallel_for(tbb::blocked_range<size_t>(0, segmented_regions.size()),[&segmented_regions, &input_expolygons, &cut_width, &interlocking_cut_width, &throw_on_cancel_callback](const tbb::blocked_range<size_t>& range) {
+    tbb::parallel_for(tbb::blocked_range<size_t>(0, segmented_regions.size()),
+    [&segmented_regions, &input_expolygons, &cut_width, &interlocking_depth, &throw_on_cancel_callback](const tbb::blocked_range<size_t> &range) {
         for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++layer_idx) {
             throw_on_cancel_callback();
-            const float  region_cut_width       = (layer_idx % 2 == 0 && interlocking_cut_width > 0.f) ? interlocking_cut_width : cut_width;
+            const float  region_cut_width       = ((layer_idx % 2 == 0) && (interlocking_depth != 0.f)) ? interlocking_depth : cut_width;
             const size_t num_extruders_plus_one = segmented_regions[layer_idx].size();
             if (region_cut_width > 0.f) {
                 std::vector<ExPolygons> segmented_regions_cuts(num_extruders_plus_one); // Indexed by extruder_id
@@ -1485,7 +1486,7 @@ std::vector<std::vector<ExPolygons>> multi_material_segmentation_by_painting(con
     BOOST_LOG_TRIVIAL(debug) << "MM segmentation - layers segmentation in parallel - end";
     throw_on_cancel_callback();
 
-    if (auto max_width = print_object.config().mmu_segmented_region_max_width, interlocking_depth = print_object.config().mmu_segmented_region_interlocking_depth; max_width > 0.f) {
+    if (auto max_width = print_object.config().mmu_segmented_region_max_width, interlocking_depth = print_object.config().mmu_segmented_region_interlocking_depth; max_width > 0.f  || interlocking_depth > 0.f) {
         cut_segmented_layers(input_expolygons, segmented_regions, float(scale_(max_width)), float(scale_(interlocking_depth)), throw_on_cancel_callback);
         throw_on_cancel_callback();
     }